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.