Lighthouse B is 9 miles west of Lighthouse A. A boat leaves A and sails 6 miles. At this time, it is sighted from B. If the bearing of the boat from B is N62°E, how far from B is the boat?
a. ( 9 ) miles
b. ( 9.81 ) miles
c. ( 10 ) miles
d. ( 10.39 ) miles