You manage your Hyper-V environment by using Microsoft System Center Virtual Machine Manager （VMM） 2008 R2. You plan to perform a virtual-to-virtual （V2V） conversion of existing VMware virtual  machines （VMs）. You need to choose a type of virtual disk that is supported by VMM. Which type should you choose？（）

• A、vmfs
• B、vmfs raw
• C、vmfs Raw Device Map
• D、vmfs Pass through Raw Device Map