All servers on your network run Windows Server 2008 R2. You plan to configure multiple highly
available virtual machines (HAVMs) on a Hyper-V failover cluster. You need to recommend a storage
solution that supports high availability. Which storage solution should you recommend?

A.
a direct-attached storage (DAS) device

B.
a multipath serial-attached SCSI drive with a witness disk

C.
a multipath Fibre Channel logical unit number (LUN) with a witness disk

D.
a multipath iSCSI logical unit number (LUN) with Cluster Shared Volumes (CSVs)