You are the network administrator for The network consists of a single Active Directory domain named All network servers run Windows Server 2003. All client computers run Windows XP Professional, and all client computer objects are store din the Clients organizational unit (OU). Client computers receive critical security patches from servers at Microsoft. A server named Testking1 runs Software Update Services (SUS). You enable Testking1 to obtain and store security patches for distribution on the internal network. Now you need to ensure that all client computers receive future security patches from Testking1 only. You open the Group Policy object (GPO) for the Clients OU. Which setting should you configure?（）

• A、Computer Configuration/Software Settings/Software Installation
• B、User Configuration/Software Settings/Software Installation
• C、Computer Configuration/Administrative Templates/Windows Components/Windows Installer
• D、User Configuration/Administrative Templates/Windows Components/Windows Installer
• E、Computer Configuration/Administrative Templates/Windows Components/Windows Update
• F、User Configuration/Administrative Templates/Windows Components/Windows Update