Applying the Concept of Labor Specialization to International Trade, If

Applying the concept of labor specialization to international trade, if all countries specialize in producing what they do relatively best,

A) each country could become self-sufficient
B) international specialization and exchange will benefit the producers but harm the consumers
C) consumers are better off, but producers are worse off
D) inefficiency in production occurs because specialization, although allowing for more production, causes people to know less about the "big picture"
E) there will be more goods produced, exchanged, and consumed