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A diver dives to 60 feet for 20 minutes, waits at the surface for 1 hour, then dives 60 feet for 30 minutes,then waits on the surface for 1 hour,then dives to 60 feet for 20 minutes.Is this dive safe for basic divers according to the dive tables?
1) No, the diver should not have made the second dive
2) No, the diver should not have made the third dive
3) Yes, as long as the diver stops at 15 feet for 3 minutes
4) Yes, the depth is not enough to get the bends
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