求助

The features of the floor of the Kasei Valles on Mars look just like those at the base of Antarctic ice streams, so it suggests that possibly it was flowing ice that carved the giant Martian channels previously attributed to cataclysmic floods.

(A) so it suggests that possibly it was flowing ice that

(B) a suggestion that flowing ice may have

(C) to suggest flowing ice as possibly having

(D) suggesting that flowing ice may have

(E) which is suggestive of flowing ice having possibly

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我想问下，为什么suggestion不能代替前面那句话啊？不是可以说成“提出的理论”吗？

那不可以说成是“提出的理论”吗？