If an Individual Has a Constant MRS of Shoes for Sneakers

Multiple Choice

If an individual has a constant MRS of shoes for sneakers of 3/4 (that is,he or she is always willing to give up 3 pairs of sneakers to get 4 pairs of shoes) then,if sneakers and shoes are equally costly,he or she will

A) buy only sneakers.
B) buy only shoes.
C) spend his or her income equally on sneakers and shoes.
D) wear sneakers only 3/4 of the time.