In Seawater, the Pressure P Is Related to the Depth

In seawater, the pressure p is related to the depth d according to , where d is in feet and p is in pounds per square inch. The Titanic was discovered at a depth of 12,400 ft. Find the pressure at this depth. Round your answer to the nearest whole number. ​

A) 6,749 lb/sq in
B) 22,760 lb/sq in
C) 22,707 lb/sq in
D) 6,778 lb/sq in
E) 6764 lb/sq in