【单选题】Refer to Exhibit 13-5. The socially efficient level of output would occur where:
A.
price equals average total cost at Q3.
B.
price equals marginal cost at Q4.
C.
price equals marginal revenue at Q1.
D.
marginal revenue equals marginal cost at Q2.
【判断题】根据“劣币驱逐良币”的规律,银币必然要取代金币
【单选题】Refer to Exhibit 13-5. How much output will the monopolist produce?
【单选题】Refer to Exhibit 12-3. If the market price increased to $5 in Graph B, this firm should:
A.
immediately shut down.
D.
continue producing the same level of output.