Which result is of securing the Cisco IOS image by use of the Cisco IOS image resilience feature？（）

• A、The Cisco IOS image file will not be visible in the output from the show flash command.
• B、The show version command will not show the Cisco IOS image file location.
• C、When the router boots up， the Cisco IOS image will be loaded from a secured FTP location.
• D、The running Cisco IOS image will be encrypted and then automatically backed up to a TFTP server.