Which Clause Describes the Surface of Europa,one of the Giant

Which clause describes the surface of Europa,one of the giant moons of Jupiter?

A) entirely ice, with fractures and ridges going in every direction
B) entirely ice, with light and dark areas containing many impact craters and parallel ridges up to about a kilometer high
C) rocky and densely cratered, except for a few large, dark, relatively uncratered plains
D) We don't know what the surface of Io is like; it is hidden below a dense layer of clouds.