The Jovian Planets Are Much Larger Than the Terrestrial Planets

Multiple Choice

The Jovian planets are much larger than the terrestrial planets. Why?

A) They formed under the extreme pressure necessary to create massively dense bodies of matter.
B) They were fully formed earlier than the terrestrial planets, and thus had time to grow.
C) They were miniature versions of the Sun before the Sun became a star through fusion.
D) They captured and retained large amounts of the hydrogen and helium that formed the Solar System.