The Term Retrograde Motion for a Planet Refers to The

The term retrograde motion for a planet refers to the:

A) temporary reversal of the planet's normal east-to-west motion past the background stars as seen from Earth.
B) apparent motion of a planet's moon in the direction opposite the motion of the planet itself during half of each orbit of the moon around the planet.
C) temporary reversal of a planet's direction of spin about its axis of rotation.
D) temporary reversal of the planet's normal west-to-east motion past the background stars as seen from Earth.