Which of the Following Is Correct? Please Select All That

Which of the following is correct? Please select all that apply.

A) Mercantilism promotes exports.
B) Theory of comparative advantage predicts that a country could gain from trade despite the country's inefficient production.
C) Theory of absolute advantage promote exports without imports.
D) Theory of absolute advantage predicts that a country could gain more from export products in which it can produce cheaply.