You are underway in a vessel with a draft of 7.0 feet (2.1 meters). The charted depth for your position is 9 fathoms. You compute the height of tide to be +3.0 feet (0.9 meters). You determine the depth of the water beneath your keel to be __________.

A
32 feet (9.8 meters)
B
41 feet (12.6 meters)
C
50 feet (15.3 meters)
D
64 feet (19.6 meters)
E