Assume that for a given consumer, the marginal utility of Dreyer's Ice Cream is 120 , and the price of Dreyer's is $$\$ 4$$ per gallon. Also, assume that the marginal utility of Blue Bell Ice Cream is 160 , and the price of Blue Bell is $$\$ 5$$ per gallon. This consumer
a. is in equilibrium.
b. should buy more Blue Bell.
c. should buy more Dreyer's.
d. can't tell; insufficient information.