Choose the One Alternative That Best Completes the Statement or Answers

Choose the one alternative that best completes the statement or answers the question.
-A sailboat leaves port on a bearing of $S 72 ^ { \circ } \mathrm { W }$ . After sailing for two hours at $12 \mathrm { knots }$ , the boat turns $90 ^ { \circ }$ toward the south. After sailing for three hours at 9 knots on this course, what is the bearing to the ship from port? Round your answer to the nearest $0.1 ^ { \circ }$ .

A) $\mathrm { S } 24.6 ^ { \circ } \mathrm { W }$
B) $\mathrm { N } 23.6 ^ { \circ } \mathrm { E }$
C) $\mathrm { S } 23.6 ^ { \circ } \mathrm { W }$
D) $\mathrm { N } 24.6 ^ { \circ } \mathrm { E }$