Florida’s Gainesville-Hawthorne State Trail, a mixed-use recreation trail paved over an old rail bed, is a curious paradox: it is not only completely man-made but also designed exclusively for human use, yet is classified as a state park.
(A) is not only completely man-made but also designed exclusively for human use, yet is
(B) not only is completely man-made but also exclusively designed for human use, yet it is
(C) is completely man-made but also exclusively designed for human use, yet
(D)is completely man-made but also has been designed exclusively for human use, yet is
(E) is not only completely man-made but also is exclusively designed for human use, yet
I am honestly just confused about how this is an unambiguous sentence. The initial part says that the sentence will introduce a paradox - while reading, I am signaled to believe the paradox is signaled by "not only... BUT."
Then, a clause beginning with "yet" comes after the clause beginning with "but." "All the Verbal" explains that the correct answer choice will always be an unambiguous sentence, but none of these options are unambiguous (at least to me) in their meaning.
What is the paradox? That the trail is man-made and a state park, or that it is designed for human use and is a state park? I am having a very hard time extracting the meaning from this sentence. The construction of "not only"..."but"..."yet" makes no sense to me - how is it okay for the "yet" to follow the "but" clause.