GMAT Sentence Correction (SC) | scientists theorize that tuberculosis

scientists theorize that tuberculosis may be responsible for the extinction of the mastodon , a species of mammalthat lived at the same time as other legendary mammals such as the woolly mammoth and saber toothed tiger

a. that lived at the same time as other legendary mammals
B. that had lived at the same time as had other legendary mammals
c. that lived at the same time those others had
d. living at the same time as those others did
e. living at the same time as those were
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