GMAT Sentence Correction (SC) | Re: Noted for its tenacity and courage, the English bulldog, having origin

Noted for its tenacity and courage,the English bulldog, having originally been bred for the brutal sport of bull-baiting, but now is cherished as a loyal animal companion.

A. the English bulldog, having originally been bred for the brutal sport of bull-baiting, but now is cherished----missing verb
B. English bulldogs were originally bred for the brutal sport of bull-baiting, but they are now cherished-----in the non underlined part we have its--so pronoun number error
C. English bulldogs were
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