Hmm, I would probably go with B. While both I think are correct, B makes a little more sense.
Answer:
It is through his persuasive abilities that one by one, the other jurors change their initial vote from guilty to not guilty. In the first vote, Juror 8 is the only one to vote not guilty. He does this not because he really feels that the defendant is necessarily innocent, but for another reason altogether.
Explanation: