It Benefits People to Specialize and Trade with Each Other

It benefits people to specialize and trade with each other because

A) with specialization and trade, they can consume outside their production possibilities frontiers.
B) they can take advantage of the fact they have an absolute advantage in the production of something.
C) otherwise they would not survive.
D) specialization and trade lead to a linear PPF.
E) with specialization and trade, absolute advantage increases.