A Prisoner's Dilemma Illustrates Situations in Which

A prisoner's dilemma illustrates situations in which:

A) resources with the lowest opportunity cost should be used first.
B) everyone does best when each person specializes in the activities in which he or she has a comparative advantage.
C) efficiency is an important social goal.
D) there is a conflict between the narrow self-interest of individuals and the broader interests of a group.