While the DEEP DRILLER is loaded as shown in Sample Form #4 (Drilling), casing is accidentally dropped over the port side. Because the tank sounding level and port forward inclination are rapidly increasing, you decide that tank 1P is damaged. Your best countermeasure is to _____.

A
deballast from tank 2P
B
dump the mud
C
counterflood into 9S
D
counterflood into C3S
E