Hello can someone please help me to answer this multiple choice below.. i really need help right now. kindly explain your answer briefly. thank you!

31. Ana is selling cookies. She wants to increase her sales by offering the bigger packages at a lower per unit cost. A pack of 10 cookies is sold at Php 60 per pack. A pack of 20 cookies is sold at P115 per pack. A pack of 30 cookies is sold at Php 160 per pack. What pricing strategy did Ana adopt? A. peak load pricing B. block pricing C. bundle pricing D. two part pricing E. customized pricing 32. IBM SPSS offers the following SPSS applications: Gradpack base, Gradpack standard, Gradpack premium, Faculty pack. What do you call this pricing strategy? A. two-part pricing B. block pricing C. bundle pricing D. peak load pricing E. customized pricing 33. Mary Ann went to Jollibee to order lunch for her family. The service crew told her that she can order a combo meal good for four persons consisting of 4 cups of rice, six-piece fried chicken, one liter of soda, 2 burgers, 2 servings of spaghetti. The service crew told Mary Ann that she can save money by ordering the combo meal instead of the ala cart. What pricing strategy is this? A. two-part pricing B. block pricing C. bundle pricing D. peak load pricing E. customized pricing 34. Cheska and her family visited a Savory restaurant in Cabanatuan one Saturday prior to the pandemic. Cheska noticed that there are foods which are priced lower than the other menu, so she ordered them. The waitress however told her that the snacks that she ordered are only available during weekdays. Seemingly Savory restaurant is doing this to encourage the customers to visit the store during weekdays where there are less customers. What pricing strategy is this? A. two-part pricing B. block pricing C. bundle pricing D. peak load pricing E. customized pricing 35. Being able to read regression results can help the manager use the information to make right decisions particularly in developing a marketing strategy. Assume that you are interested in finding whether the advertisement has a significant positive effect on sales. Which of the following is correct? A. lower standard errors of the estimates are better than higher standard errors B. as a rule of thumb, you are correct 95 % of the time in concluding that there is a positive and significant relationship between the advertising expenditures and sales if the coefficient attached to advertising expenditure is positive and the "t" value is at least 2 C. there is a positive significant relationship between advertising expenditure and sales if both the lower bound and the upper bound of the confidence interval are positive. D. the R2 shows the proportion of the variation in the sales as explained by the model which consists of the advertising expenditure plus some other determinants of sales that you have included in the model E. all are correct 36. If the model showing the effect of advertising expense on sale has an F value of 10.5 with a p value of 0.0345, an adjusted R2 of 0.74, advertising coefficient of 0.10 with a p value of 0.0215, which one is correct? A. 74% of the variation in sales is really attributed to the model which includes advertising expense as one of the explanatory variables. B. the coefficient of 0.10 attached to advertising expense indicates that for every unit of advertising expense, the sales increase by 0.10 unit. C. the p value of 0.0215 indicates that if we conclude that there is a positive significant relationship between advertising expense and sales, we are correct 97.85% of the time. D. we only commit an error of 3.45% in making a conclusion that the model as a whole is significant. E. all are correct 37. Given ln Qda = 2.35 - 0.12 ln Pa - 0. 25 ln Y + 0.18 ln Pb - 0.26 ln Pc, (all in logarithmic form), which of the following is correct? Note: Qda is the quantity demanded for product "a", Pa is the price of product "a", Pb is the price of product "b", Pc is the price of product "c" and Y is the income, ln means natural logarithm. A. the demand for product "a" is price inelastic B. the demand for product "a" is price elastic C. a 1% increase in the Pa will cause a 0.12% decrease in the demand for product "a" D. A and C are correct E. B and C are correct 38. Given: ln Qda = 2.35 - 0.12 ln Pa - 0. 25 ln Y + 0.18 ln Pb - 0.26 ln Pc, (all in logarithmic form), which of the following is correct? The definition of the variables are found in #37. A. product "a" and product "b" are substitutes B. product "a" and product "b" are complementary C. a 1% increase in the Pb will increase the demand for "a" by 0.18% D. A and C are correct E. B and C are correct 39. Given: ln Qda = 2.35 - 0.12 ln Pa - 0. 25 ln Y + 0.18 ln Pb - 0.26 ln Pc, (all in logarithmic form), which of the following is correct? Note: the definition of the variables are found in #37 A. product "a" is a normal good B. product "a" is an inferior good C. a 1% increase in the income causes the demand for "a" to decrease by 0.25% D. A and C are correct E. B and C are correct 40. Given: ln Qda = 2.35 - 0.12 ln Pa - 0. 25 ln Y + 0.18 ln Pb - 0.26 ln Pc, (all in logarithmic form), which of the following is correct? Note: the definition of the variables are found in #37 A. product "a" and product "c" are complementary B. product "a" and product "c" are substitutes C. a 1% increase in the price of product "c" will reduce the demand for product "a" by 0.26%