The Rings of Saturn Are Composed of Very Many Small

The rings of Saturn are composed of very many small particles because they:

A) are made up of ice and ice-coated rocks, which break up easily in sunlight.
B) are inside the Roche limit of Saturn, where tidal forces are stronger than the mutual gravitational forces between particles.
C) were formed by the impact of a fast-moving asteroid on a large moon, which broke up into very many pieces.
D) were spun out of the planet under its rapid rotation over a long period of time.