Your network contains 20 iSCSI storage appliances that will provide storage for 50 Hyper-V hosts
running Windows Server 2012 R2.
You need to configure the storage for the Hyper-V hosts.
The solution must minimize administrative effort.
What should you do first?

A.
Install the iSCSI Target Server role service and configure iSCSI targets.

B.
Install the iSNS Server service feature and create a Discovery Domain.

C.
Start the Microsoft iSCSI Initiator Service and configure the iSCSI Initiator Properties.

D.
Install the Multipath I/O (MPIO) feature and configure the MPIO Properties.

Explanation:
http://technet.microsoft.com/en-us/library/cc753442.aspx
http://technet.microsoft.com/en-us/library/cc772568.aspx