The primary Cisco WLC v7.0 has rebooted to a newer version of software, causing the APs to
associate to the secondary controller or controllers. Given the default configuration parameters,
what happens when the primary Cisco WLC is back in service?

A.
APs remain on the existing controller.

B.
APs remain on the existing controller until the APs are loaded with newer software, and then
will return to the primary controller.

C.
APs return to the prior controller on a first-come, first-serve basis.

D.
APs return to the prior controller based on AP Failover Priority Level 1 first, followed by 2
through 4 ascending.

E.
APs return to the prior controller based on AP Failover Priority Level 4 first, followed by 3
through 1 descending.

Explanation: