单选题

Consumer surplus is most accurately defined as the difference between the（）。

A、 total value consumers place on the quantity of a good purchased, and the total amount they must pay for that quantity.
B、 value consumers are willing to pay for an additional unit of good or service and the cost of producing the additional unit of the good or service.
C、 marginal benefit and the marginal cost of the last unit consumed of a good or service.

【正确答案】 A

【答案解析】

For an individual, consumer surplus is defined as the sum of the differences between what that individual is willing to pay for each individual unit of a good or service that he or she purchases (marginal benefit) and the amount that he or she actually pays for each of these individual units.