3. Consider the following prisoner's dilemma game. Player 2 High Low Player 1 High 10,10 2, 20 Low 20, 2 4,4 Suppose that this game is played an infinite number of times and that Player 2 is using a grim trigger strategy. What is the discount that is low enough for Player 1 to switch from cooperating at a (high, high) equilibrium? Show any work. 4. Discuss the parameters in the Fehr-Schmidt model intuitively. Why does that model explain the behavior found in many Ultimatum and Dictator game settings?