题目：
A columnist is discussing how the efficient quantity of output for a good or service is determined. These two statements appear in his column: Statement 1: The equilibrium quantity of production for a good or service can be considered efficient as long as the marginal social benefit of that quantity is greater than its marginal social cost. Statement 2: Subsidies and quotas typically result in production of a good or service in quantities at which the marginal social cost exceeds the marginal social benefit. Are these statements correct Statement 1 Statement 2 （）
A. Correct Correct
B. Correct Incorrect
C. Incorrect Incorrect
答案：
参考答案：C
解析：
Statement 1 is incorrect. The efficient quantity of output is the quantity at which the marginal social benefit (demand) is equal to the marginal social cost (supply). Statement 2 is also incorrect. Subsidies typically lead to overproduction, where the marginal social cost at the quantity produced is greater than the marginal social benefit. Quotas, however, typically limit production to a level below equilibrium, such that the marginal social benefit at the quantity produced is greater than the marginal social cost.
