In What Way Is the Rocky Material of Jupiter's Core

In what way is the rocky material of Jupiter's core different from the rocks found on Earth

A) It is much cooler because Jupiter is further from the Sun.
B) It contains more liquid water.
C) It is much hotter and denser because of the extreme pressure at the core of Jupiter.
D) It is not composed of iron and nickel because this material will float of the surface.
E) It is composed entirely of ices that have frozen into a large rock-like structure.