How Do the Particles in Saturn's Rings Orbit the Planet

Multiple Choice

How do the particles in Saturn's rings orbit the planet?

A) in the plane of the planet's equator, as a solid disk
B) in the plane of the planet's equator, in individual orbits for each particle
C) in the plane of the planet's equator, outside the Roche limit
D) around the planet's poles, in individual orbits for each particle