Which of the Following Is True

Multiple Choice

Which of the following is true?

A) For a finitely repeated game, the game is played enough times to effectively punish cheaters, and therefore collusion is likely.
B) In an infinitely repeated game with a low interest rate, collusion is unlikely because the game unravels so that effective punishment cannot be used during any time period.
C) A secure strategy is the optimal strategy for a player no matter what the opponent does.
D) None of the preceding answers is correct.