Question 10 In the game above, what will player 2 do if player 1 chooses down Question 11 In the game above, what is/are the sub-game perfect Nash equilibrium? Question 12 In the game above, is/are the sub-game perfect Nash equilibrium efficient? Question 13Question 9 Player 1 In the game above, what will player 2 do if P1 chooses up Down Player 2 P1 gets 520 P2 gets $15 Pl gets $7 P2 gets 310 P1 gets $0 P2 gets $158 P1 gets $150 P2 gets $150