Use the following payoff matrix to answer the next four questions. Firm B X Y Firm A 8. 2 6/5 2 3. 8 10.9 18. What is the secure strategy for firm A? A-A -7 1 b. 2 A - 2 3 C. X d. Y 19. What is the dominant strategy for firm A? a x b. Y C. 1 d. 2 c. Firm A does not have a dominant strategy. 20. What is the dominant strategy for firm B? b. Y_ C. 1 d. 2 e. Firm B does not have a dominant strategy. 21. What is the Nash equilibrium? a. 1, X b. L. Y c 2.X d. 2. Y