According to the Code of Federal Regulations，on vessels other than river ferryboats and river vessels，how are periodic lifeboat weight tests required to be conducted?（）

A. The lifeboat is lowered to near the water，loaded with the allowed capacity，lowered into the water until afloat，then released from the falls
B. The lifeboat is loaded with the allowed capacity，lowered into the water until afloat，then released from the falls
C. The lifeboat is lowered into the water until afloat，loaded with the allowed capacity，then released from the falls
D. The lifeboat is lowered to near the water，loaded with the allowed capacity，then released from the fall