Exhibit 6-15 Long-run average cost 50 SRATCA SRATO, SRATO LRAC 40 Costs per 30 unit (dollars) 20 10 500 1.000 1.500 2,000 Quantity of output (units per week) If the firm represented in Exhibit 6-15 is operating with a plant whose size corresponds to short-run average total cost curve A, the level of output that would minimize its short-run average total cost is: a. 1,500 units per week. O b. 500 units per week. O c. 1,000 units per week. O d. 2,000 units per week