Which statement about oligopolies is true?

A.     Most oligopolies in the U.S. engage in outright collusion.
B.     Most oligopolies operate at the minimum point of their ATC curves.
C.     Most of our GDP is produced by oligopolies.
D.     Collusion is illegal in the U.S. and does not exist.

ANSWER:

C.     Most of our GDP is produced by oligopolies.