Which statement about the DiRT backup is true?

Which statement about the DiRT backup is true?

A.
It can be restored to a functioning Cisco Unity of the same software level.

B.
It can be restored to a functioning Cisco Unity of an upgraded software level.

C.
It can be restored to a Cisco Unity platform with only the operating system installed.

D.
It can be restored to a Cisco Unity platform with the operating system and SQL installed.