A customer has been using Avamar to leverage deduplication for VMware. They have been
performing guest-level backups and now want to perform. vmdlk backups for disaster recovery.
What is a requirement to perform VCB backups?

A.
Proxy host with Microsoft Windows 2003 SP1 or 64-bit Red Hat Linux

B.
Guests with VCB and Virtual Center server software installed

C.
ESX server with Fibre Channel SAN storage hosting VMFS or RDMS

D.
Guests with the Avamar client and the Avamar VCB Interoperability Module