All client computers in your environment run Windows 7. You virtualize applications by using Microsoft Application Virtuali zation (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.