Exhibit 9-21 in Exhibit 9-21, D = AR Represents

Exhibit 9-21 In Exhibit 9-21, D = AR represents the market demand curve for bicycles, MR_m represents the marginal revenue curve for a monopolist producer of bicycles and S_c = MC = AC represents the marginal cost curve for a monopolist producer of bicycles and the market supply curve when the market is perfectly competitive.The consumer surplus in a monopolist market would be

A) $10
B) $20
C) $30
D) $40
E) $50