A. In the Backup utility, specify an incremental backup. Run the backup again.
B. In the Backup utility, clear the Disable volume shadow copy option. Run the backup again.
C. In the attribute properties of c:\Data\Letter.doc, select the File is ready for archiving option. Run the backup again.
D. In the Offline settings dialog box of c:\Data, select the All files and programs that users open from the share will be automatically available offline option. Run the backup again.