6. Under a competitive market, suppose that all firms are identical. For each individual firm, longrun average cost is minimized at $0.20 per unit and 500 units are produced. The market demand is Q=10,000/P and the longrun supply is horizontal. How many firms will this industry sustain in the long run?
(A) 0
(B) 100.
(C) 50,000.
(D)There is no enough information to answer.

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