Consider the following game in which players choose high or low. a. Calculate the discount factor required to sustain collaboration assuming that both players employ the \"grim\" strategy. h. Now suppose that even when players plan to choose high, there is a 10% chance that they press the wrong button. (maybe they are playing on horseback?) (Assume that the probability of pressing the wrong button is independent each time and between players.) Is {grim grim} still an equilibrium? Show your work