You are the network administrator for your company. The network consists of a single Active Directory domain. All servers run Windows Server 2003. All client computers run Windows XP Professional. You need to implement a new software update infrastructure. You discover that security patches， critical updates， and service packs have never been installed on any client computer on the network.You install Windows Server Update Services （WSUS） on a Windows Server 2003 computer named Server5. You synchronize and approve all of the current security patches， critical updates， and service packs.You need to ensure that all client computers receive all Microsoft security patches， critical updates， and service packs. 
Which two actions should you perform？（）

A.Open the WSUS console. Select the option to automatically approve WSUS updates.
B.Install the Automatic Updates client on all client computers.
C.Modify the Microsoft Update settings of the Default Domain Controller organizational unit (OU) Group Policy object (GPO) to point client computers to http ://server5.
D.Modify the Microsoft Update settings of the Default Domain Policy Group Policy object (GPO) to point client computers to http: //server5.
E.Open the WSUS console. Create a target group and assign all client computers to the group.