The Prisoner's Dilemma Shown Displays the Payoffs Associated with Two

The prisoner's dilemma shown displays the payoffs associated with two firms: Firm A and Firm B. These firms are in an oligopoly and they can choose to either collude or compete. These two firms are likely to collude only if:

A) this is a repeated game.
B) this is a one-time game.
C) the government regulates this market.
D) they are the only two firms with dominant market share.