Refer to the exhibit. Why is the Cisco IOS Firewall authentication proxy not working?

A.
The aaa authentication auth-proxy default group tacacs+ command is missing in the configuration.

B.
The router local username and password database is not configured.

C.
Cisco IOS authentication proxy only supports RADIUS and not TACACS+.

D.
HTTP server and AAA authentication for the HTTP server is not enabled.

E.
The AAA method lists used for authentication proxy should be named “pxy” rather than “default” to match the authentication proxy rule name.