4. (20 points) Consider the following symmetric normal form game. In each cell, the first number is the payoff to the row player, and the second number is the payoff to the column player. Player B X X Player A 0,0 4,1 y 1,4 3,3 (a) (15 points) Draw a graph illustrating the expected payoffs of each strategy as a function of the probability of the opponent playing x. This should look similar to the graphs I showed in class for the Hawk-Dove game. (b) (5 points) Is there an evolutionarily stable strategy? If so, what is it?