单选题
编号：2690316
1. Which of the following statements about consumer surplus and producer surplus is most accurate?
- A.Economic gains to society are maximized at the price and quantity where consumer surplus and producer surplus are equal.
- B.No producer surplus is realized on the sale of an additional unit of a good if the opportunity cost of producing it is greater than the price received.
- C.A consumer is not willing to buy an additional unit of a good if his consumer surplus from the next unit is less than his consumer surplus from the previous unit.