While the DEEP DRILLER is loaded as shown in Sample Form #4 (Drilling), casing is accidentally dropped over the port side. Because the sounding level and port aft inclination are slowly increasing, you decide that tank 10P has minor damage. Among the possible corrective actions is _______.

A
deballast from tank 9P
B
dump the mud
C
counterflood into 2S
D
counterflood into 10P
E