What is the primary benefit of using upgrade export over either backup or snapshot?

A.
The commands backup and snapshot can take a long time to run whereas upgrade export will take
a much shorter amount of time.

B.
upgrade export will back up routing tables, hosts files, and manual ARP configurations, where
backup and snapshot will not.

C.
upgrade export has an option to backup the system and Smart View Tracker logs while backup
and snapshot will not.

D.
upgrade export is operating system independent and can be used when backup or snapshot is not
available.