You have a FAT32-formatted volume.You need to enable file-level security on the volume. The solution must maintain all files on the volume. What should you do？（）

• A、Run the sfc.exe command-line tool.
• B、Run the convert.exe command-line tool. 
• C、From Disk Management, format the volume and select the NTFS file system.
• D、From Disk Management, upgrade the disk that contains the volume to a dynamic disk.