You are the network administrator for . In particular you administer a Windows 2003 server named TestKing13. You need to use Disk Management to configure a partition on TestKing13. When you attempt to access Disk Management, you receive the following error message: "Unable to connect Logical Disk Manager service." You verify that the Logical Disk Manager service is started. What is the most likely cause of the problem?（）

• A、There is not enough available space on the boot partition.
• B、The disk performance counters are disabled.
• C、The Logical Disk Manager Administrative service is disabled.
• D、The Windows 2003 Administration Tools Pack is not installed