In David Ricardo's Theory of Comparative Advantage

Multiple Choice

In David Ricardo's theory of comparative advantage,

A) international trade is a zero-sum game in which one trading partner's gain comes at the expense of another's loss.
B) liberalization of international trade will enhance the welfare of the world's citizens.
C) is a short-run argument,not a long-run argument.
D) has been superseded by the now-orthodox view of mercantilism.