You are the network administrator for The network consists of a single Active Directory domain The functional level of the domain is Windows 2000 native. All network servers run Windows Server 2003, and all client computers run Windows XP Professional. The network includes a shared folder named TestKingInfo. Your boss Dr. King reports that he is often unable to access this folder. You discover that the problem occurs whenever more than 10 users try to connect to the folder. You need to ensure that all appropriate users can access TestKingInfo. What should you do?（）

• A、Decrease the default user quota limit.
• B、Raise the functional level of the domain to Windows Server 2003.
• C、Purchase additional client access licenses.
• D、Move TestKingInfo to one of the servers.