GMAT Sentence Correction (SC) | Re: Deregulated in 1984, the researchers at AT&T continue to produce new a

Deregulated in 1984, the researchers at AT&T continue to produce new and important ideas and products such as undersea fiber optic cable.

(A) Deregulated in 1984, the researchers at AT&T continue to produce
(B) Having been deregulated in 1984, the researchers at AT&T are continuing to produce
(C) The researchers at AT&T, even though it was deregulated in 1984, continues to produce
(D) Although AT&T was deregulated in 1984, its researchers continue to produce
(E) Despite its
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