Plane a Is Flying at 400 Mph in the Northeast $\degree$

Multiple Choice

Plane A is flying at 400 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 $\degree$ N of E
B) 52.5 $\degree$ N or W
C) 37.5 $\degree$ N of W
D) 36.9 $\degree$ N of W