Ok, now I need your help

I think I know the answer to this question, but evidently a lot of people don't. And I cannot seem to find clarification anywhere on the official ACC website or in the NCAA bylaws. Here's the question - for the new football conference alignment, is the winner of each division (coastal, atlantic) based on the team's record in their division only or based on their overall ACC record?.......... I think the answer is the overall ACC record, as it would be hard to base it on 5 games only. Can anyone find the answer officially?