This is a question about game theory. I dont know how to solve it using the equation.

1 Problem 1 Two criminals have been caught by the police. Because of lack of evidence the prosecution needs a confession to convict. If no confession ensures, they will be charged and convinced for a minor offense earning them one year less than a conviction for the main crime. The prosecutor offers each prisoner the following deal. If she confesses, and the other does not, she will get three years off her sentence whereas the other prisoner will get an extra year in prison. If both confess, they will be punished according to the law (no reductions). This story easily translates into the following strategic form game (N; X; SA, 83; (uA, 253)) with N E {A, B} is the set of players; S A E {0, N} E S B is the set of strategies common to both players, where C implies \"confess\