game theory

4 1 \\2 x y z a 2,5 2,1 0,1 b 3,2 4,4 1,1 Find all strategy profiles that form pure strategy Nash equilibria (click all that apply: there may be zero, one or more): O (a, x); O (b, x); O (b, z); O (a, z); O (b, y); O (a, y); O ( c, y); O (c, Z ). I (c, X )