基礎ECON-MSTR-016
A single-price monopoly maximises profit where:
A. Price equals marginal cost.
B. Average revenue is minimised.
C. Marginal cost equals zero.
D. Marginal revenue equals marginal cost, and price is read off the demand curve above that quantity.✓ 答案
解說
The output rule is MR = MC for any firm that can choose quantity. A single-price monopolist then charges the price on the demand curve at that quantity, which is above MR. P = MC is the efficient benchmark, not the monopoly’s profit rule.