Your Space Vehicle Is Traveling Directly Away from Earth with a Speed

Your space vehicle is traveling directly away from Earth with a speed c/2,where c = 3 $\times$ 10⁸ m/s is the velocity of light.A light signal is sent from Earth.The speed with which this light passes your vehicle,as measured by the crew,would be

A) c/4
B) c/2
C) c
D) 3c/4
E) c/(1 - 1/4) ^1/2