You are the administrator of Company.com’s network. Your network has 100 Windows 2000 Professional computers and 10 Windows 2000 Server computers. Users on the network 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. In addition, the network servers is configured with disk quotas for the NTFS volume that contains the home folders. All users have a default limit of 100 MB, and the option to deny space to users who exceed their limit has been enabled. A user reports that he cannot save any files to his home folder. He also cannot update files in his home folder. When he attempts to save files to the folder, he receives the following error message: “Insufficient disk space.” Other users are not experiencing this problem with their home folders. You want to enable the user to save files in his home folder. What should you do?（）

A. Use Windows Backup to archive and remove old files on the server.
B. Increase the server’s disk quota entry for the user to accommodate the additional files.
C. Log on to the network as a Recovery Agent.Decrypt all of the user’s files in his home folder.
D. Log on to the network by using the domain Administrator account.Grant the user Full Control permission to his home folder.