Which statement best describes configuring access control lists to control Telnet traffic destined to therouter itself？（）

• A、The ACL applied to the vty lines has no in or out option like ACL being applied to an interface.
• B、The ACL is applied to the Telnet port with the ip access-group command.
• C、The ACL must be applied to each vty line individually.
• D、The ACL should be applied to all vty lines in the in direction to prevent an unwanted user from connecting to an unsecured port.