Directions: The following question consists of a sentence that is either partly or entirely underlined. Below the sentence are five versions of the underlined portion of the sentence. Choice $(A)$ duplicates the original version. The four other versions revise the underlined portion of the sentence. Read the sentence and the five choices carefully, and select the best version. Choose the answer according to the norms of standard written English for grammar, word choice, and sentence construction.

Chester Copperpot, the English entrepreneur, has come up with a new puzzle so complicated neither he or anybody else either has been able to calculate a formula for its solution.

A$.$ so complicated neither he or anybody else either has

B$.$ so complicated neither he and no one else either has

C$.$ so complicated that neither he nor anyone else have

D$.$ of such complication that he and no one else either has

E$.$ so complicated that neither he nor anyone else has