Match the following.

List-I (Theories of International Trade)	List-II (Features)
a. Theory of mercantilism	1. It is developed by John Stuart Mill
b. Theory of absolute advantage	2. What each country will export and what it will import is determined by comparative differences in labour costs
c. Theory of comparative cost	3. It refers to the ability of a country to produce a good more
d. Theory of reciprocal demand	4. It attributes and measures the wealth of a nation by the size of its accumulated treasures