Answer:
4) will have a comparative advantage if it has a lower opportunity cost of producing that good.
Explanation:
For example, country A can produce 50 units of X and 40 units of Y, while country B can produce 30 units of X and 15 units of Y.
Country A has a comparative advantage in the production of good Y, while country B has a comparative advantage in the production of good X. Country A has an absolute advantage in the production of both goods.