A monopolist will maximize profits by:（）

A. producing at the point where price is equal to MR.

B. producing at the output level where marginal revenue equals average variable cost and charging a price along the demand curve that corresponds to the output rate.

C. producing at the output level where marginal revenue equals marginal cost and charging a price on the demand curve that corresponds to the output rate.

在国际交往中，涉外人员在面对媒体时要有备而至，应对自如。