
Passage: In the early days of its formation, the Earth was a rapidly rotating body in the state of lava, and most of the iron was in its core; some molten liquid was thrown from the surface of this rotating body, and later condensed to form the Moon.
Question: If the above theory about the origin of the Moon is correct, which of the following conclusions can most support the view?
A. A.The Moon is the only sizable celestial body orbiting the Earth
B. B.The proportion of iron in the Moon's core is smaller than that in the Earth's core.
C. C.The Moon's surface solidified after the Earth's surface solidified.
D. D.Like Earth, the Moon has a solid surface structure and a lava-state core.
Answer: