Suppose that France and Germany both produce rye and shoes. France's opportunity cost of producing a pair of shoes is 3 bushels of rye while Germany's opportunity cost of producing a pair of shoes is 11 bushels of rye.

By comparing the opportunity cost of producing shoes in the two countries, you can tell that has a comparative advantage in the production of shoes and has a comparative advantage in the production of rye.

Suppose that France and Germany consider trading shoes and rye with each other. France can gain from specialization and trade as long as it receives more than of rye for each pair of shoes it exports to Germany. Similarly, Germany can gain from trade as long as it receives more than of shoes for each bushel of rye it exports to France.

Based on your answer to the last question, which of the following prices of trade (that is, price of shoes in terms of rye) would allow both Germany and France to gain from trade?Check all that apply.

2 bushels of rye per pair of shoes

13 bushels of rye per pair of shoes

4 bushels of rye per pair of shoes

6 bushels of rye per pair of shoes