Which Statement About Jupiter's Rings Is True

Multiple Choice

Which statement about Jupiter's rings is true?

A) They were discovered by Galileo at the same time he discovered the moons.
B) They are larger than Saturn's, but darker.
C) They are made, in part, of material ejected by Europa's volcanoes.
D) They lie inside Jupiter's Roche Limit.
E) They are dark because their ices are dirtier than Saturn's.