Two Objects Are Moving Directly Away from an Observer at the Same

Multiple Choice

Two objects are moving directly away from an observer at the same speed. One object, however, is twice as far away as the other. How do their Doppler shifts compare?

A) They are the same.
B) The more distant object has the greater Doppler shift.
C) The more distant object has the smaller Doppler shift.
D) Whichever object is larger will have the greater Doppler shift.