Which of the Following Statements Concerning Ring Satellites of the Planets

Which of the following statements concerning ring satellites of the planets is true?

A) They are thin, solid disks revolving around the parent planets in polar orbits.
B) They consist of concentrations of particles generally smaller than 10 meters in diameter.
C) They have orbits that do not coincide with the equatorial planes of the parent planets.
D) They are present around Saturn and Jupiter, but not around Uranus and Neptune.