Essentials of Economics 7th Edition by Gregory Mankiw

Exercise 15

When two individuals produce efficiently and then make a mutually beneficial trade based on comparative advantage,
A) they both obtain consumption outside their production possibilities frontier.
B) they both obtain consumption inside their production possibilities frontier.
C) one individual consumes inside her production possibilities frontier, while the other consumes outside hers.
D) each individual consumes a point on her own production possibilities frontier.