The marginal benefit Claire gets from purchasing a third pair of flip-flops is
A.
the same as the total benefit of purchasing three pairs of flip-flops.
B.
more than the marginal cost of purchasing the third pair of flip-flops.
C.
the total benefit Claire gets from purchasing three pairs of flip-flops minus the total benefit she gets from purchasing two pairs of flip-flops.
D.
the total benefit Claire gets from purchasing four pairs of flip-flops minus the total benefit she gets from purchasing three pairs of flip-flops.