Figure 15-18 T Price 70 60- 50- 40 35 30 25 -MC-ATC . MR Demand 50 100 150 200 250 300 350 400 450 500 550 600 650 Quantity Refer to Figure 15-18. If the monopoly firm is not allowed to price discriminate, then consumer surplus amounts to O $2,000. O $4,000. O $1,000. O $3,000