An Earth Observer Sees a Spaceship at an Altitude of 920

Multiple Choice

An Earth observer sees a spaceship at an altitude of 920 m moving downward toward the Earth at a speed of 0.690c.What is the spaceship's altitude as measured by an observer in the spaceship?

A) 1270 m
B) 512 m
C) 1650 m
D) 666 m
E) ​635 m