(A) 6 kg/cm
(B) 12kg/cmz
(C) 20 kg/cmz
(D) 27.5 kg/cmz
(E) 35 kg/cm
(A) 6 kg/cm
(B) 12kg/cmz
(C) 20 kg/cmz
(D) 27.5 kg/cmz
(E) 35 kg/cm
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