All servers on your companys network run Windows Server 2008 R2. All client computers run Windows 7，The company is planning to virtualize an application that runs only on Windows XP.  You need to recommend a virtualization solution that enables users to access the virtualized application while their computers are disconnected from the corporate network.  Which technology should you recommend？（）

• A、Windows Virtual PC
• B、Remote Desktop Services （RDS）
• C、Microsoft Application Virtualization （App-V）
• D、Microsoft Virtual Desktop Infrastructure （VDI）