Sentence Correction (SC) | Confusion with using "which"

Out of public's interest in the details of and conflicts inother people's lives have grown a booming market for reality television shows, which are bringing regular people onto the television with increasing frequency.

A. other people's lives have grown a booming market for reality television shows, which are bringingneed the plural version has, out of the public's intrest ....has grown

B. other people's lives has grown a booming market for reality television shows, which are bringing"which are bringing", refers to the booming market, which is singular. so we need the sentence that has subject verb agreement in number