MD Longhorn wroteI believe that when reading a question like this, we must assume that things that happen before the supposed play were ruled upon correctly. So the 8-run thing being not invoked implies that there was a proper reason for it not to be invoked.
So without a line-up card, the assumption is that the team is using the DP/FLEX and that B1 is neither. Otherwise, nine could be fine 🙂