Your network consists of a single Active Directory domain. All servers run Windows Server 2003 Service Pack 2 （SP2）. All client computers run Windows XP Professional Service Pack 3 （SP3）.Computer accounts for the client computers are located in three organizational units （OUs） named OU1， OU2， and OU3.  You install Windows Server Update Services （WSUS） 3.0 on a member server named Server1. On Server1， you create three WSUS computer groups named OU1， OU2， and OU3. You need to ensure that each client computer is assigned automatically to the WSUS computer group that corresponds to the OU in which the computer account resides.  Which two actions should you perform？（）

• A、From the Update Services console， configure the Computers options.
• B、From the Update Services console， configure the Automatic Approvals options.
• C、From the Default Domain Policy， configure the Windows Update settings.
• D、Create a new Group Policy object （GPO） for each OU. Configure the Windows Update settings in each GPO.