You are the network administrator for The network consists of a single Active Directory domain The domain contains 25 Windows server 2003 computers and 5,000 Windows 2000 Professional computers. You install and configure Software Update Services (SUS) on a server named TestKingSrv. All client computer accounts are in the Clients organizational unit (OU). You create a Group Policy object (GPO) named SUSupdates and link it to the Clients OU. You configure the SUSupdates GPO so that client computers obtain security updates from TestKingSrv. Three days later, you examine the Windowsupdate.log file on several client computers and discover that they have downloaded Windows security updates from only You need to configure all client computers to download Windows security updates from TestKingSrv. What should you do?（）

A. Open the SUSupdates GPO and configure the Configure Automatic Update policy to assign the Auto download and notify for install setting for Windows security updates.
B. Open the SUSupdates GPO and configure the Configure Automatic Update policy to assign the Auto download and schedule the install setting for Windows security updates.
Create software distribution policy for the SUSupdates GPO that assigns the package WUAU22.msi to all client computers. Restart all client computers.
D. On all client computers, configure the UseWUServer registry value to enable Automatic Updates to use TestKingSrv.