Your environment includes a Windows Server 2008 R2 Hyper-V failover cluster and a single Windows Server 2008 R2 Hyper-V server. You are designing a migration strategy.  You need to ensure that you can perform a SAN migration to move virtual machines （VMs） from the single server into the failover cluster.  Which two actions should you perform？（）

• A、Add the Storage Manager for SANs feature
• B、Install a Virtual Disk Service （VDS） hardware provider
• C、Use Cluster Shared Volumes （CSVs） to store the VM files
• D、Install Microsoft System Center Virtual Machine Manager （VMM） 2008 R2