What is the primary benefit of using the command upgrade_export over either backup or snapshot?

[answerhappygod]

What is the primary benefit of using the command upgrade_export over either backup or snapshot?

A. upgrade_export is operating system independent and can be used when backup or snapshot is not available.
B. upgrade_export will back up routing tables, hosts files, and manual ARP configurations, where backup and snapshot will not.
C. The commands backup and snapshot can take a long time to run whereas upgrade_export will take a much shorter amount of time.
D. upgrade_export has an option to back up the system and SmartView Tracker logs while backup and snapshot will not.