The "Tragedy of the Commons" Metaphor Suggests That __________

The "tragedy of the commons" metaphor suggests that __________.

A) national interests should be defined in zero-sum terms
B) the pursuit of self-interest will result in the greatest good for the greatest number
C) solutions to national problems will lead automatically to the solution of international problems
D) if individuals act out of short-term self-interest,all may suffer in the long run