Use the Figure Below to Answer the Following Questions

Multiple Choice

Use the figure below to answer the following questions.

Figure 13.4.6
-Prime Pharmaceuticals has developed a new asthma medicine, for which it has a patent. An inhaler can be produced at a constant marginal cost of $2 per inhaler. The demand curve, marginal revenue curve, and marginal cost curve for this new asthma inhaler are shown in Figure 13.4.6. The patent gives Prime Pharmaceuticals a monopoly for its new inhaler. If Prime Pharmaceuticals can perfectly price discriminate, then consumer surplus is

A) zero.
B) $24 million.
C) $64 million.
D) $44 million.
E) $32 million.