The students will have a party____the evening of June 18th.

A.on

B.at

C.in

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.