Answer the question on the basis of the following demand and cost data for a specific firm. Demand Data Cost Data (1) Price (2) Price (3) Quantity Output Total Cost $ 11 . 00 $ 10.00 6 6 $ 61 9 . 99 8 . 85 7 62 9. 00 8 . 00 8 8 64 8.00 7.00 67 7.10 6 . 10 10 10 72 6.00 5.00 11 11 79 5 . 15 4. 15 12 12 86 With the demand schedule shown by columns (2) and (3), in long-run equilibrium