A certain consumer buys only food and compact
discs. If the quantity of food bought increases, while
that of compact discs remains the same, the marginal
utility of food will
a. fall relative to the marginal utility of compact
discs.
b. rise relative to the marginal utility of compact
discs.
c. rise, but not as fast as the marginal utility of
compact discs rises.
d. fall, but not as fast as the marginal utility of compact
discs falls.