Trade Theorists Have Proven That the Gains from International Trade

Multiple Choice

Trade theorists have proven that the gains from international trade

A) must raise the economic welfare of every country engaged in trade.
B) must raise the economic welfare of everyone in every country engaged in trade.
C) must harm owners of "specific" factors of production.
D) will always help "winners" by an amount exceeding the losses of "losers."
E) usually outweigh the benefits of protectionist policies.