If the Terrestrial Planets Were Formed by Homogeneous Accretion, Then

Multiple Choice

If the terrestrial planets were formed by homogeneous accretion, then

A) they were initially molten forming an iron core first, then they accreted a silicate crust later.
B) they were initially molten forming a silicate core first, then they accreted an iron crust later.
C) they were initially collections of solid particles which melted then differentiated into a high-density iron metal core and low-density silicate crust.
D) they were initially collections of solid particles which melted then differentiated into a high-density silicate core and low-density iron metal crust.