The Accompanying Figure Shows Two Ships at Points $P$ And $Q$ , Which Are in the Same Vertical Plane as an Q

Multiple Choice

The accompanying figure shows two ships at points $P$ and $Q$ , which are in the same vertical plane as an airplane at point $R$ . When the height of the airplane is 4,000 ft, the angle of depression to $P$ is 38° and that to $e$ is 15°. Find the distance between the two ships.

A) 54,900 ft
B) 2,050 ft
C) 20,050 ft
D) 80,430 ft
E) 4,200 ft