Marginal Revenue Steadily Declines as a Monopolist Tries to Increase

Multiple Choice

Marginal revenue steadily declines as a monopolist tries to increase the number of units sold because

A) total revenue declines as additional units are sold.
B) the demand curve shifts to the left.
C) production costs fall as output rises.
D) the greater the sales, the smaller the profit.
E) to sell additional units, the firm must reduce the price of all the units it sells.