Trade Based Upon Comparative Advantage Is Economically Beneficial Because

Trade based upon comparative advantage is economically beneficial because:

A) it promotes an efficient allocation of world resources
B) it gives consumers a narrower range of products to choose from
C) it gives governments the chance to charge high tariffs on imports
D) it allows government policy makers to choose the products the economy will specialize in
E) it gives domestic businesses the chance to reduce the number of competitors they face in product markets