Which One of the Following Is Not Illustrated by the So-Called

Which one of the following is not illustrated by the so-called Prisoner's Dilemma?

A) Each player in the game ends up with results that depend on the other player's action.
B) It does not pay for the players to collude with each other.
C) Both players would be better off, if they could only agree on which action to take.
D) The results for each player in the game are uncertain, if they are not able to communicate.