Table 16-2 The following table shows the total output produced by the top six firms as well as the total industry output for each industry. Firm Industry A Industry B Industry C Industry D 1 13,250 8,750 1,750 15,000 2 10,975 7,500 1,725 14,000 3 8,175 6,400 1,700 13,000 4 4,275 5,000 1,675 12,000 5 1,250 4,250 1,650 11,000 6 875 4,000 1,625 10,000 Total 45,350 70,900 30,125 120,000 Refer to Table 16-2. What is the concentration ratio for Industry A? a. about 71% b. 100% c. about 88% d. about 81%