Retrograde motion describe the

Question

A backward motion of the stars relative to Earth
B uniform circular motion exhibited by the planets
C irregular speeds at which the planet travel.
D backward motion of the planets with respect to the stars

I think the answer is A
But my book state that it in a backward motion but I don't understand

Answer 1

I already answered this question for you and the answer was not A.

Check my previous answer.

You have two "backward motions" to choose among.

Answer 2

http://www.jiskha.com/display.cgi?id=1269739195