Please help me answer the following economic questions. Thank you.

38) The crude or classical version of the quantity theory of money predicts that changes in a. the money supply lead to strictly proportional changes in the price level. b. the money supply do not affect the price level. c. the price level lead to strictly proportional changes in velocity and GDP. d. velocity lead to nearly proportional changes in the money supply. 39) "The money supply multiplied by velocity must equal GDP" is a statement of the a. simple quantity theory of money. b. equation of exchange. c. modern quantity theory of money. d. all of the above 40) The crude or classical version of the quantity theory of money predicts that an increase in M of 5 percent will lead to a. an increase in P of 5 percent. b. an increase in P of less than 5 percent. C. an increase in P of more than 5 percent. d. a decrease in P of 5 percent. e. a decrease in P of more than 5 percent. 41) If GDP is $16,000 and velocity is 4, the money supply is a. $27,000. b. $12,000. C. $4,000. d. $3,000. e. There is not enough information provided to answer this