According to game theorists, a person should ________ in single shot prisoner's dilemma games; ________ in multi-round prisoner's dilemma games with a defined end point, and ________ in infinite-horizon prisoner's dilemma games.
defect, defect, play tit-for-tat
defect, play tit-for tat, cooperate
cooperate, cooperate, cooperate
defect, play tit-for-tat, defect