It Benefits People to Specialize and Trade with Each Other

Multiple Choice

It benefits people to specialize and trade with each other because

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