4. Suppose that there are 10 million workers in Canada, and that each of these workers can produce either 2 cars or 30 tonnes of wheat in a year.

a. What is the opportunity cost of producing a car in Canada? What is the opportunity cost of producing a tonne of wheat in Canada? Explain the relationship between the opportunity costs of the two goods.

b. Draw Canada's production possibilities frontier. If Canada chooses to consume 10 million cars, how much wheat can it consume without trade? Label this point on the production possibilities frontier.

c. Now suppose that the United States offers to buy 10 million cars from Canada in exchange for 20 tonnes of wheat per car. If Canada continues to consume 10 million cars, how much wheat does this deal allow Canada to consume? Label this point on your diagram. Should Canada accept the deal?