An organization implements an N+1 redundancy for its access controllers (ACs). When the
primary AC fails, the access points (APs) successfully fail over to the standby AC. However,
when the failed AC comes back in to service, the APs do not switch back to the original AC.
What could cause this to happen?

A.
AP Connection priority on the primary AC is not set to 1.

B.
APs determine which AC to connect to based on load.

C.
APs do not fail back to the original AC.

D.
AP Connection priority on the primary AC is not set to 7.