正解:D
"When decommissioning an Axis device, always perform a factory restore to securely remove all configuration, user data, and stored information from the device."
- Axis Decommissioning Guide
"A factory restore erases all user data and settings, returning the device to its original state, which is necessary before removing the device from service."
- Axis Communications Academy, Network Video Fundamentals, 2022
References:
Axis Technical Note: Device Decommissioning
Axis Communications Academy, Network Video Fundamentals, 2022 (p. 106)