One Consequence of the Combination of Rapid Orbital Motion and Synchronous

Multiple Choice

One consequence of the combination of rapid orbital motion and synchronous rotation of Phobos as it orbits Mars is that:

A) its orbital plane is slowly moving toward a polar orbit around Mars.
B) it is slowly spiraling into the planet.
C) it is slowly spiraling outward from the planet.
D) one side of the moon never receives sunlight.