【单选题】In a repeated game, punishments that result in heavy damages are an incentive for players to adopt the strategies that result in a ________ equilibrium.
if the players play the game repeatedly, the players can achieve a higher payoff, on average, than when they play the game only once.
B.
the solution when playing the game once will be the same as the solution when the players play the game repeatedly, since agreements cannot be maintained in a prisoners' dilemma.
C.
repeated play will always result in a better outcome for both players than when the game is played only once.
D.
the tit-for-tat strategy in repeated play requires players to always select the opposite strategy as their opponent.