Refer to the Figure Below to Answer the Following Questions

Multiple Choice

Refer to the figure below to answer the following questions.

The figure shows the market for helicopters in Canada, where D is the domestic demand curve and S is the domestic supply curve. Canada trades helicopters with the rest of the world at a price of $36 million per helicopter.
Figure 31.1.2
-In Figure 31.1.2, with international trade Canadian firms buy ________ helicopters per year.

A) 240
B) 480
C) 720
D) 360
E) 600