A customer has two Cisco 5520 WLCs that manage all APs throughout the network. The WLCs are in different locations to provide geographical redundancy. A mobility group has been configured on both WLCs and has an UP status on both controllers. The APs in location A are statically configured to use controller A as the primary and controller B as the secondary. If the WLC in location A goes offline, the APs successfully join the WLC in location B, but they do not fail over to their primary configured controller when it recovers.Which configuration task fixes the issue?
A. onfigure the WLC in location A as primary using the CAPWAP AP Controller IP Address command on all the location A access points
B. se DHCP Option 43 and specify WLC in location A as primary
C. nable AP fallback globally on the WLC
D. hange the AP Failover Priority to critical