Q. Two people select a policy that affects m both by alternately vetoing policies until only one remains. First person 1 vetoes a policy. If more than one policy remains, person 2 n vetoes a policy. If more than one policy still remains, person 1 n vetoes another policy. Process continues until a single policy remains vetoed. Assume re are three possible policies, X, Y and Z, person 1 prefers X to Y to Z and person 2 prefers Z to Y to X. Model this situation as an extensive game and find out its Nash equilibrium