You need to identify which operating system must be installed on the Hyper-V server in the new branch office. Which operating system should you identify？（）

• A、a Server Core installation of Windows Server 2008 R2 Enterprise
• B、a Server Core installation of Windows Server 2008 R2 Standard
• C、Windows Server 2008 R2 Enterprise
• D、Windows Server 2008 R2 Standard