In the forest, 80 rabbits were caught for the first time, and then marked and put back. For the second time 80 rabbits were caught again, and we found that five of them were labeled (every rabbit in the forest has the same probability of being caught). How many rabbits are there in the forest?
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A1680
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B3200
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C1600
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D1280
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E2000
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正确答案: D