If Individuals Can Credibly Cooperate and Split the Gains, Which

If individuals can credibly cooperate and split the gains, which payoff is the most likely? $\begin{array} { | l | l | l | } \hline & \text { A: Not Cheat } & \text { A: Cheat } \\\hline \text { B: Not Cheat } & \text { A: } 1 , \text { B: } 50 & \text { A: } 1 , \text { B: } 1 \\\hline \text { B: Cheat } & \text { A: } 2 , \text { B: } 1 & \text { A: } 5 , \text { B: } 5 \\\hline\end{array}$

A) 1, 11
B) 1, 1
C) 2, 1
D) 5, 5