Figure 14-8 Suppose a firm operating in a competitive market has the following cost curves: b. CD c. DF d. BCD MC 23. Refer to Figure 14-8. Which line segment best reflects the short-run supply curve for this firm? a. ABCF Figure 7-13 Price 200 100- 360- 140- 120 300- ATC 20 40 60 80 AVC 24. Efficiency in a market is achieved when a. the sum of producer surplus and consumer surplus is maximized. b. a social planner intervenes and sets the quantity of output after evaluating buyers' willingness to Quantity pay and sellers' costs. c. all firms are producing the good at the same low cost per unit. d. no buyer is willing to pay more than the equilibrium price for any unit of the good. 120 140 160 Quantity 25. Refer to Figure 7-13. If the equilibrium price is $60, what is the producer surplus?