The Outer Cores of Jupiter and Saturn Are Made of "Ices

Multiple Choice

The outer cores of Jupiter and Saturn are made of "ices" that are actually in the liquid state.Why are they not solid?

A) The pressure in the outer cores of Jupiter and Saturn is too great.
B) The temperature in the outer cores of Jupiter and Saturn is too high.
C) The material of the ices is hydrogen and helium, which cannot exist in a solid form.
D) The constant agitation caused by the planets' rotation prevents the formation of a solid.