问题
单项选择题
Which of the following statements about a monopolist is least accurate（）
A. The monopolist faces a downward sloping demand curve.
B. Unlike an oligopolist, a monopolist will always be able to earn economic profit.
C. A profit-maximizing monopolist will expand output until marginal revenue equals marginal cost.
答案
参考答案：B
解析：
The monopolist faces a downward-sloping demand curve. In some cases, a monopolist may be unable to sell for a profit. Price may be insufficient to cover the per-unit cost of the monopolist even when operating at the MR = MC rate of output.