Lisa Is Buying Bread and at Her Current Purchases, the Marginal

Lisa is buying bread and at her current purchases, the marginal utility (in dollars) is less than price.If she wants to optimize, she should

A) reduce bread consumption, thus raising P to the level at which MU = P.
B) reduce bread consumption, thus raising MU to the level at which MU = P.
C) increase bread consumption, thus raising P to the level at which MU = P.
D) increase bread consumption, thus lowering MU to the level at which MU = P.