You are the network administrator for The network contains Windows Server 2003 computers and Windows XP Professional computers. You install Software Update Services (SUS) on a server named TestKingSrv. You scan the client computers to find out if any current hotfixes are installed. You notice that no client computers have been updated during the past seven days. You are unable to access the synchronization logs on TestKingSrv. You need to ensure that SUS is functioning properly. What should you do on TestKingSrv?（）

A. Delete the History_Approve.xml file and restart the computer.
B. Delete the Aucatalog.cab file and restart the computer.
C. Restart the Background Intelligent Transfer Service (BITS).
D. Restart all IIS-related services.