You are the administrators of your company's network. Your network has 75 Windows 2000 Professional computers and eight Windows 2000 Server computers. Users on the network drive save their work files in home folders on a network server. The NTFS partition that contains the home folders has Encrypting File System (EFS) enabled. The partition also has disk quotas defined. A user named Candy reports that she cannot save any files to her home folder. She also cannot update files in her home folder. When she attempts to save files to the folder she receives the following error message: "insufficient disk space". Other users are not experiencing this problem with their home folders. You want to enable Candy to save files in her home folder. What should you do? （）

A. Log on to the network as a Recovery Agent. Decrypt all of candy's files in her home folder
B. Log on to the network by using the Domain Administrator account. Grant Candy full control permission to her home folder
C. Use Windows Backup to archive and remove old files on the server
D. Increase the server disk quota entry for Candy to accommodate the additional file