The Diagram Below Shows Supply and Demand Curves for Bicycles

The diagram below shows supply and demand curves for bicycles in the domestic Canadian market.Assume that all bicycles are identical.
FIGURE 34- 4
-Refer to Figure 34- 4.Assume there is free trade in bicycles.If the world price of bicycles is $500,Canada's will be bicycles per year.

A) imports; 20 000
B) exports; 20 000
C) imports; 30 000
D) exports; 50 000
E) exports; 30 000