You are the network administrator for your company. The network consists of a single IP subnet. All servers run Windows Server 2003. All client computers run Windows XP Professional.You need to install Windows Server Update Services （WSUS） on a computer named Server1. Server1 has limited hard disk space. Server1 stores a minimal amount of information locally. Client computers must install Microsoft critical updates.You need to ensure that client computers download updates directly from Microsoft Update. Only approved updates should be downloaded. What should you do？（）

A. Open the WSUS console. Specify the Update Source as Synchronize from Microsoft Update.
B. Open the WSUS console. Modify the synchronization option to not store updates locally.
C. Modify the default home page for all client computers to https： //windowsupdate.microsoft.com.
D. Configure the client Group Policy object （GPO） to use Microsoft Update as its update source.