P, MC, ATC MC 160 120 ATC 100 70 60 40 Demand Curve 30 MR Q O 30 50 80 29) Suppose the monopolist cannot price discriminate (charges the same price to each consumer). Then the equilibrium (monopoly) quantity is and the profit is a) 50; 3000 b) 50; 4500 c) 30; 1800 d) 30; 2700 30) Suppose the monopolist can perfectly price discriminate (charge different price to each consumer). Then the equilibrium (monopoly) quantity is and the profit is a) 50; 3000 b) 50; 4500 c) 30; 2400 d) 30; 1800