Which of the Following Conditions, If Present, Is Sufficient to Make

Multiple Choice

Which of the following conditions, if present, is sufficient to make a game cooperative?

A) Individual payoffs are greater if all players choose the same strategy.
B) Players can communicate with each other.
C) Players can negotiate binding contracts committing them to particular strategies.
D) Players must agree unanimously on any set of strategies.
E) The payoff that is highest for all individuals together is also highest for each individual player.