You use a Huawei router as an SSH client to log in to another Huawei router, but the login fails.
You suspect that it may be a configuration error on the SSH server. When checking the cause of the server configuration failure, which of the following is the most unlikely?
A . The SSH protocol is not bound to the VTY interface of the user interface
B . User service type, authentication type, user authentication service type are not configured
C . The server and client SSH versions are inconsistent
D . SSH first authentication function is not enabled
Answer: D