Refer to the exhibit.

You are troubleshooting RADIUS issues on the network and the debug radius command returns the
given output. What is the most likely reason for the failure?

A.
An invalid username or password was entered.

B.
The RADIUS port is incorrect.

C.
The NAD is untrusted by the RADIUS server.

D.
The RADIUS server is unreachable.

E.
RADIUS shared secret does not match