(A) 2 meters of water column
(B) 3 meters of water column
(C) 5 meters of water column
(D) 6 meters of water Column
(E) 7 meters of water column
(A) 2 meters of water column
(B) 3 meters of water column
(C) 5 meters of water column
(D) 6 meters of water Column
(E) 7 meters of water column
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