________ buys so as to make MU_x/MU_y = P_x/P_y for all pairs of goods.

A) A utility-minimizing consumer
B) Every consumer
C) A utility-maximizing consumer
D) Only a consumer with an unlimited budget

This equation represents the equality of the marginal utility per dollar spent on two goods (x and y), which is a condition for utility maximization. A utility-maximizing consumer adjusts their consumption to satisfy this condition across all pairs of goods to achieve the highest possible satisfaction from their budget.