The General Message of the Folk Theorems Is

Multiple Choice

The general message of the folk theorems is:

A) Nash equilibria may not be sustainable over many replications of a game.
B) payoffs that are unambiguously preferred to Nash equilibria may be sustainable over many replications of a game.
C) credible threats may inhibit the achievement of mutually beneficial outcomes over many replications of a game.
D) just plain folk play the best games.