4. Consider the two-player game with players, strategies and payoffs described in the following game matrix. L Player B M R t 0,3 6,2 1,1 Player A m 2.3 0,1 7,0 b 5.3 4,2 3, 1 Figure 6.28: Payoff Matrix (a) Does either player have a dominant strategy? Explain briefly (1-3 sentences). (b) Find all pure strategy Nash equilibria for this game.