2. Consider the game below Player 2 C r a 0. 7 2, 5 7. 7 Player 1 b 5, 2 3, 3 5.3 C 7, 0 2, 5 0, 5 a. Find all Nash equilibria. b. Suppose the same game is played sequentially with player 1 playing first. Draw the game tree and find all subgame perfect equilibria