You are the network administrator for your company. The network consists of a single Active Directory domain. The domain contains 35 Windows Server 2003 computers； 3，000 Windows XP Professional computers； and 2，000 Windows 2000 Professional computers.Windows Server Update Services （WSUS） is installed on a server named Server1. The necessary Group Policy object （GPO） is configured.You need to confirm whether all computers in the domain have received all approved updates from Server1. What should you do on Server1？（）

A. Install and configure Urlscan.exe.
B. At the command prompt， type gpresult /scope COMPUTE
C. Open the WSUS console. Run the Status of Computers report.
D. Open the WSUS console. Run the Synchronization Results report.