You want the text "Unauthorized access prohibited!" to be displayed before the login prompt every time someone tries to initiate a Telnet session to a router, as shown in the example below: Which command can be used to configure this message?（）

• A、login banner x Unauthorized access prohibited! X
• B、banner exec y Unauthorized access prohibited! Y
• C、banner motd x Unauthorized access prohibited! X
• D、vtv motd "Unauthorized access prohibited!"