You are configuring a Windows Server 2008 R2 server to support a virtual machine （VM） that uses a passthrough disk. You need to install the operating system on the VM. Which two actions should you perform？（） 

• A、.Attach the pass-through disk to an IDE controller.
• B、Attach the pass-through disk to a SCSI controller.
• C、Place the VM configuration file on the host server.
• D、Place the VM configuration file on the pass-through disk.