OG(VR)58

[alva0930]

A recording system was so secretly installed and operated in the Kennedy Oval Office that even Theodore C. Sorensen, the White House counsel, did not know it existed.
(A) A recording system was so secretly installed and operated in the Kennedy Oval Office that
(B) So secret was a recording system installation and operation in the Kennedy Oval Office
(C) It was so secret that a recording system was installed and operated in the Kennedy Oval Office
(D) A recording system that was so secretly installed and operated in the Kennedy Oval Office
(E) Installed and operated so secretly in the Kennedy Oval Office was a recording system that

對OG的解釋有一部分看不太懂，
(E) The inverted word order does not grammatically fit into the rest of the sentence.

我覺得(E)的grammar似乎沒什麼問題啊，到底哪邊錯了呢？

[dibert8]

(E) 倒裝造成頭重腳輕,不如 (A).