Jupiter's Satellite Europa Is Believed to Be Made Up of

Multiple Choice

Jupiter's satellite Europa is believed to be made up of

A) a metallic core and a rocky mantle covered with a liquid water ocean whose surface is frozen.
B) a small, rocky core overlaid by a very thick layer of water ice.
C) ice and rock mixed throughout in roughly equal proportions.
D) solid rock throughout, the surface of which shows ancient craters.