Bobby Is Buying Slices of Pizza and Place a Value

Multiple Choice

Bobby is buying slices of pizza and place a value of his utility of the first slice at $5; a second slice at $4, and a third slice at $2.If Bobby eats three slices of pizza for lunch, his total utility is equal to

A) $5 less what he had to pay.
B) $2, since that's the marginal utility of the last slice.
C) the marginal utility of the third slice.
D) $11.