How would an administrator reset a Cisco VCS Control appliance to the default configuration?

How would an administrator reset a Cisco VCS Control appliance to the default configuration?
A . Via the CLI, log in as root and issue the factory-reset command.
B . Via the CLI, log in as root and issue the reset-defaults command.
C . Via the web GUI, log in as the administrator, choose Backup and Restore, and click the Factory Reset button.
D . Hold down the power button for 10 seconds until the light flashes.
E . Hold down the reset button on the back of the appliance for 10 seconds.

View Answer

Answer: A