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

A
deballast from tank 9P
B
dump the mud
C
counterflood into 2P
D
place a wooden plug into the vent of tank 10S
E