The Fact That Earth's Interior Is Sorted into Layers Indicates

Multiple Choice

The fact that Earth's interior is sorted into layers indicates that

A) the process of formation from a nebula (by the slamming together of material and planetesimals that stuck together on impact) produces nice, neat layers.
B) Earth was once in a molten state, during which materials became sorted based on density.
C) the rotation of the early Earth acted like a centrifuge which separated materials based on weight.
D) nothing can be inferred about such a perplexing level of organization.