All users on one of the two guest WLANs are failing to connect after a configuration change was
made to a controller. What is the cause of the outage?

A.
The interface or VLAN of the anchor controller and foreign controller no longer match.

B.
The configuration of the failing WLAN no longer matches the foreign controllers.

C.
The address of the NAC guest server has been changed.

D.
The DHCP server on the foreign controller was changed.

Explanation: