Which of the Following Is True for a Monopolist That

Which of the following is true for a monopolist that does not price discriminate?

A) P > MR because some revenue is lost from having to lower the price on all units sold
B) P < MR because the monopolist must lower price to sell more output
C) P = MR only at the profit-maximizing level of output
D) P = MR because there are no close substitutes for the good
E) P = MR because the firm faces a perfectly elastic demand curve