McqMate
| Q. |
When a perfectly competitive industry is in long-run equilibrium, all firms in the industry |
| A. | earn zero economic profits |
| B. | produce a level of output where short-run marginal cost is equal to short-run average total cost |
| C. | produce a level of output where long-run marginal cost is equal to long-run average cost |
| D. | All of the above are correct |
| Answer» D. All of the above are correct | |
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