While drilling loaded as shown in Sample Load Form #4 (Drilling), the DEEP DRILLER suffers an unexpected but slowly increasing starboard and aft inclination. The wind and waves are light. This inclination could have been caused by ___________________.

A
the failure of mooring lines 6 and 7
B
the drilling crew dumping the mud
C
the drill string breaking
D
ballast tanks equalizing into tank 10S
E