You have a Windows Server 2008 R2 Hyper-V failover cluster. You manage the virtual environment by using Microsoft System Center Virtual Machine Manager （VMM） 2008 R2. You need to find out whether the failover cluster is properly configured to support highly available virtual machines （VMs）.    Which PowerShell cmdlet should you run？（）

• A、Test-Cluster
• B、Enable-VMHost
• C、Get-VMHostRating
• D、Test-ClusterResourceFailure