A router has been configured with the authentication order settings shown below:
[edit]
user@host# show system authentication-order authentication-order [radius tacplus password];
The router also has a local database that contains the user lab with password lab123. What would happen if both the RADIUS and the TACACS servers respond with a reject for user lab?（）

A.The user lab will not be able to login.
B.The user lab will be authenticated against the local database and will be able to login.
C.The user will be able to login only if tries to login as the root user.
D.The user lab will receive an error message indicating the username and password provided could not be found on the radius and tacacs servers.