Plane a Is Flying at 600 Mph in the Northeast

Multiple Choice

Plane A is flying at 600 mph in the northeast direction relative to the Earth.Plane B is flying at 500 mph in the north direction relative to the Earth.What is the direction of motion of Plane B as observed from Plane A?

A) 52.5° N of E
B) 48.2° N of W
C) 37.5° N of W
D) 10.1° N of W