Merchant Marine Stability and Trim License Questions

A vessel's KG is determined by __________. A. dividing the total longitudinal moment summation by displacement B.  dividing the total vertical moment summation by displacement C. multiplying the MT1 by the longitudinal moments D. subtracting LCF from LCB

Which statement about the free surface correction is TRUE?     A. It is added to the uncorrected GM to arrive at the corrected available GM.     B. It is obtained by dividing the free surface moments by 12 times the volume of displacement.     C. It is obtained by dividing the total free surface by the total vertical moments.     D. It is subtracted from the total longitudinal moments before dividing by displacement to find LCG.