You need to assign VirtualiSCSI2.vhd a logical unit value of 0

You have a server named LON-DC1 that runs Windows Server 2012 R2. An iSCSI virtual disk named
VirtualiSCSI1.vhd exists on LON-DC1 as shown in the exhibit. (Click the Exhibit button.)

You create a new iSCSI virtual disk named VirtualiSCSI2.vhd by using the existing itgt iSCSI target.
VirtualiSCSIl.vhd is removed from LON-DC1.
You need to assign VirtualiSCSI2.vhd a logical unit value of 0.
What should you do?

A.
Run the Set-VirtualDisk cmdlet and specify the -Uniqueld parameter.

B.
Run the Add-IscsiVirtualDiskTargetMapping cmdlet and specify the –Lun parameter.

C.
Run the iscsicli command and specify the reportluns parameter.

D.
Run the Set-IscsiVirtualDisk cmdlet and specify the –DevicePath parameter.

Explanation:
The Add-IscsiVirtualDiskTargetMapping cmdlet assigns a virtual disk to an iSCSI target. Once a virtual
disk has been assigned to a target, and after the iSCSi initiator connects to that target, the iSCSI
initiator can access the virtual disk. All of the virtual disks assigned to the same iSCSI target will be
accessible by the connected iSCSI initiator.
Parameter include: -Lun<Int32>
Specifies the logical unit number (LUN) associated with the virtual disk. By default, the lowest
available LUN number will be assigned.

Add-IscsiVirtualDiskTargetMapping
https://technet.microsoft.com/en-us/library/jj612800(v=wps.630).aspx