Figure 17-2 in Figure 17-2, in the Absence

Figure 17-2 In Figure 17-2, in the absence of trade, the domestic price of shoes is P_n. Since many foreign countries have a comparative advantage in the production of shoes, when the United States begins to trade, the domestic price will fall to the world price. When this happens, what does the quantity Q_c through Q_p represent?

A) the quantity of shoes that the United States imports
B) an increase in the world consumption of shoes
C) the quantity of shoes that the United States exports
D) a reduction in the world consumption of shoes