US and Canada can both grow wheat and can do mining. Use the following table to look for which country has a comparative advantage in mining. (Hint: Find the cost of mining in terms of wheat in each country.)
Absolute Cost in US Absolute Cost in Canada
Wheat $5 C$8
Mining $10 C$12
Canada has a comparative advantage in mining.
TheUShas a comparative advantage in mining.
No comparative advantage in mining exists for either nation.
We must first know the exchange rate to be able to answer this question.
Both a and b.