671. "On board a membrane class LNG tanker during drying operation what will happen if the cargo tank pressure is below or equal to 5 mbar gauge then the primary insulation space pressure?"

A. HD (head) and LD(LAY down) will continue to operate.
B. HD (head) and LD(LAY down) will automatically stop.
C. HD (head) will stop, but LD (LAY down) will continue to operate.
D. HD (head) will continue to operate, but LD (LAY down) will stop.