A. Only if both comparative and absolute advantage are present in both countries.
B. If opportunity costs are the same in the countries involved.
C. Only if there are economies of scale available.
D. If countries specialize in the production of goods in which they are relatively more efficient.
Submitted by: Areesha Khan
Comparative advantage suggests that even if a country does not have an absolute advantage, it should produce goods where it has the lowest opportunity cost.
The correct answer to the question: "The doctrine of comparative advantage states that there are gains from international trade:" is "If countries specialize in the production of goods in which they are relatively more efficient.".