You have a NetWorker environment consisting of one data zone and six storage nodes. Each storage node has access to a separate 10TB LUN created on a CX700. Which licenses do you need and how many?

A.
Two Disk Backup Option (Tier 4) License

B.
One Disk Backup Option (Tier 5) License

C.
One Backup to Disk Option (Tier 5) License

D.
Two Backup to Disk Option (Tier 4) Licenses