It will be B rings because gas giants (Jupiter, Neptune, Saturn, and Uranus) are mainly made up of gases and there cant be no volcanos because the gas giants have no oxygen and even if they did there far away from the sun so the heat does not reach so there is no life on the gas giants because the gases they are made up of there toxic so there's no life also the other four planets (Mercury, Venus, Mars, and Earth) are made of rock so they do have volcanos, and valleys, and mountains. Your answer is B.