All client computers in your environment run Windows 7. You virtualize applications by using Microsoft Application Virtualization (App-V). You need to reset the FileSystem cache on a client computer. What should you do?（）
A. Use the AppVCacheSize tool to set the maximum cache size to 0.
B. Use the AppVCacheSize tool to set the minimum free disk space threshold to 0.
C. Set the HKLM\SOFTWARE\Microsoft\SoftGrid\4.5\Client\AppFS\State registry key to 0.
D. Set the HKLM\SOFTWARE\Microsoft\SoftGrid\4.5\Client\AppFS\FileSize registry key to 0.
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