just need answer, I don't need explain. thank you:

Questions #29 through #32 refer to the graph below. 12 8 AC= MC MR D 40 80 120 Quantity 29. If the market depicted above were perfectly competitive, the equilibrium price and quantity would be and a. $4; 40 b. $4; 80 c. $8; 40 d. $0; 120 30. If the market depicted above were a pure monopoly, the equilibrium price and quantity would be: a. $8; 60 b. $8; 40 c. $4; 80 d. $12; 40 31. If the market depicted above were perfectly competitive, consumer surplus would be: a. (12-8)*40 b. (12 - 4)*80 C. (8-4)*40 d. 12*120 32. If the market depicted above were a pure monopoly, the monopolist's profit would be: a. (12 -8)*40 b. (12-4)*80 C. (8-4)*40 d. 12*120 33. Assume that the UFC is the only hirer of mixed martial arts (MMA) fighters. Let the supply schedule of MMA fighters be, in part, as given in the following table. Quantity Salary 10 $50,000 11 $52,000 12 $54,000 13 $56,000 What is the UFC's marginal expense in hiring the 12th fighter? a. $2,000 b. $54,000 c. $65,000 d. $76,000