Which step does the AP take next?

A lightweight AP has been deployed in local mode in a network that consists of 10 wireless LAN
controllers in a single mobility group. The AP has been configured to use primary, secondary, and
tertiary Cisco WLCs. Due to a major power failure, all those Cisco WLCs are unavailable.
Which step does the AP take next?

A.
The AP reboots and repeatedly attempts to join the configured primary, secondary, and tertiary
Cisco WLCs in that order. The process continues until one of the configured Cisco WLCs is
available.

B.
The AP attempts to join a Cisco WLC configured as a master controller.

C.
The AP attempts to join the Cisco WLC that has the greatest capacity available.

D.
The AP state transitions to AP Fallback Mode and continues to provide limited WLAN services
(that is, no new client authentications) until a Cisco WLC is available.