Which of the following would produce no change in the contribution margin per unit? Select one: a. None of the given of answers. O b. A 17% decrease in fixed cost. OC. A 14% increase in variable cost. Od. A 7% increase in selling price. e. A 15% decrease in selling price. XYZ Company's product has a contribution margin per unit of $12 and a variable cost ratio of 70%. What is the selling price of the product? Select one: a. $37.5. O b. $30. c. $24. d. $40. e. $50. XYZ Company's single product has a selling price of $25 per unit. Last year the company reported profit of $175,000 and variable expenses totaling $840,000. The product has a 40% contribution margin ratio. Because of competition, XYZ Company will be forced in the current year to reduce its selling price by $2 per unit. How many units must be sold in the current year to earn the same profit as was earned last year? Select one: O a. 70,000 O b. 84,000 c. 38,500 d. 101,500 e. 56,000