Your network consists of a single Active Directory domain. All servers run Windows Server 2003 Service Pack 2 (SP2).You have two servers named Server1 and Server2. Both servers have Windows Server Update Services (WSUS) 3.0 installed.You need to configure WSUS so that Server2 uses Server1 as the upstream server. What should you do on Server2?（）

• A、From the command prompt, run wuauclt.exe. 
• B、From the command prompt, run wsusutil.exe. 
• C、From the Update Services console, run the WSUS Server Configuration Wizard. 
• D、From the Local Computer Policy, specify the location on the intranet for the Microsoft update service.