Refer to the exhibit. 
You are a senior wireless network administrator and have just completed the configuration of
TACACS+ on your production Cisco WLC server. You can successfully log into the Cisco WLC by
using your domain credentials. However, junior administrators, who have only local management
accounts on the Cisco WLC, are complaining that they can no longer log into the Cisco WLC GUI
or CLI. What is the cause of this problem?
A.
When TACACS+ is configured on the Cisco WLC, local authentication is permanently disabled.
B.
TACACS+ is the first authentication priority. The ACS is responding, so the Cisco WLC never
queries the local database.
C.
TACACS+ was configured and the ACS is responding, so all local accounts on the Cisco WLC
are disabled.
D.
The junior administrators must also have domain accounts with the same username but
different passwords than the local Cisco WLC accounts, so the ACS is returning an access-reject.
This prevents the Cisco WLC from querying the local database.