Exhibit 23-7 -Refer to Exhibit 23-7. If D Represents the Demand Curve

Multiple Choice

Exhibit 23-7

-Refer to Exhibit 23-7. If D represents the demand curve facing a perfectly price-discriminating monopolist, the price it charges for the last unit sold exceeds the marginal cost of the last unit by

A) $30.
B) $15.
C) $0.
D) an amount that cannot be determined without the average cost curve.