Which one of the following statements about a monopoly is true?

A. The monopolist has a flat demand curve because of high barriers to entry.

B. For monopolistic firm, profit will be maximised where P=MR.

C. In the long run, a monopolist can earn only normal profits.

D. Price in a long run is not usually equal to minimum average total cost.

E. A monopolistic will always make economic profit in the long run.