You are the network administrator for your company. The network consists of a single Active Directory domain with three sites. There is a domain controller at each site. All servers run Windows Server 2003. Each client computer runs either Windows 2000 Professional or Windows XP Professional. The IT staff is organized into four groups. The IT staff works at the three different sites. The computers for the IT staff must be configured by using scripts. The script or scripts must run differently based on which site the IT staff user is logging on to and which of the four groups the IT staff user is a member of. You need toensure that the correct logon script is applied to the IT staff users based on group membership and site location. What should you do？（）

A. Create four Group Policy objects （GPOs）. Create a script in each GPO that corresponds to one of the four groups. Link the four new GPOs to all three sites. Grant each group permissions to apply only the GPO that was created for the group.
B. Create a single script that performs the appropriate configuration based on the user’s group membership. Place the script in the Netlogon shared folders on the domain controllers.
Configure a Group Policy object （GPO） with a startup script that configures computers based on IT staff group. Link the GPO to the three sites.
D. Create a script that configures the computers based on IT staff group membership and site. Create and link a GPO to the Domain Controllers OU to run the script.