What Is Significant About the Rotational and Orbital Motions of the Galilean

Multiple Choice

What is significant about the rotational and orbital motions of the Galilean moons of Jupiter in which they mimic the behavior of Earth's Moon?

A) nonsynchronous rotation, with axes of rotation in any direction with respect to their orbital plane
B) nonsynchronous rotation, with independent periods of rotation and revolution and spin axes perpendicular to their orbit
C) synchronous rotation, with one face always pointed toward the planet
D) synchronous rotation, with one face always pointed toward the Sun