You use Microsoft System Center Virtual Machine Manager （VMM） 2008 R2 to create and manage virtual machines （VMs）. You attempt to create the first VM on a Hyper-V host by using Windows PowerShell. You receive an error message stating that the New-VM PowerShell cmdlet is not recognized. You need to be able to create VMs by using PowerShell. What should you do？（）

A. .Install the VMM Self-Service Portal.
B. Enable the Windows PowerShell Integrated Scripting Environment feature.
C. In PowerShell， run the Add-PSSnapin Microsoft.SystemCenter.VirtualMachineManager cmdlet.
D. Run the Create-VM -Name "VM01" -VirtualHardDisk $VHD -VMHost $VMHost -Path "C：\MyVMs" PowerShell cmdlet.