You encrypt your files to ensure the security of the files. You want to make a backup copy of the files and maintain their security settings. You have the option of backing up to either the network or floppy disk.  What should you do？（）

• A、Copy the files to a network share on an NTFS volume and do nothing further.
• B、Copy the files to a network share on a FAT 32 volume and do nothing further.
• C、Copy the files to a floppy disk that has been formatted by using Windows 2000 Professional. 
• D、Place the files in an encrypted folder， and then copy the folder to floppy disk.