If the atmospheric pressure on the surface of an oil tank (sp. gr. 0.8) is 0.2 kg/cm, the pressure at a depth of 50 m below the oil surface will be _____________________?

A. 5 meters of water column

B. 3 meters of water column

C. 2 meters of water column

D. 7 meters of water column

E. 6 meters of water Column
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