Suppose that Canada has domestic firms that could supply its entire market for radios at a price of $50, while U.S. firms could supply radios at $40 and Mexico at $30. Suppose that Canada initially has a 50 percent tariff on imports of radios and then forms a free trade area with the United States. As a result, Canada realizes:
A. Trade creation, no trade diversion, and overall welfare gains
B. Trade creation, no trade diversion, and overall welfare losser
C. Trade diversion, no trade creation, and potential overall welfare losser
D. Trade diversion, trade creation, and potential overall welfare gains