According to the nebular theory, what is the explanation as to why the terrestrial planets formed in the inner solar system and the jovian planets formed in the outer solar system?
a. the denser terrestrial planets sank inward towards the sun through the nebular cloud, but the less dense jovian planets did not sink through the nebular cloud.
b. all of the planets formed at a large distance from the sun but the dense terrestrial planets experienced a larger pull of the sun's gravity and were drawn into orbits that are closer to the sun then the jovian planets.
c. ices condensed in the outer solar system and some icy planetesimals grew large enough to attract gas from the nebula, but only metals and rock condensed in the inner solar system.
d. all of the planets were initially about the same size but the planets closer to the sun have had much of their material evaporated because they are warmer than the outer planets.