Suppose That a Firm Faces a Demand Curve for Its $P = 10 - Q ^ { d }$

Multiple Choice

Suppose that a firm faces a demand curve for its product of $P = 10 - Q ^ { d }$ . The corresponding marginal revenue curve is $M R = 10 - 2 Q$ . The firm has a constant marginal cost of $4 per unit. If the firm engages in first-degree price discrimination, how much producer surplus will it capture?

A) $21.
B) $18.
C) $9.
D) $4.50