Your company has a single Active Directory domain named intranet.contoso.com. All domain controllers run Windows Server 2008 R2. The domain functional level is Windows 2000 native and the forest functional level is Windows 2000. You need to ensure the UPN suffix for contoso.com is available for user accounts. What should you do first()
- ARaise the intranet.contoso.com forest functional level to Windows Server 2003 or higher.
- BRaise the intranet.contoso.com domain functional level to Windows Server 2003 or higher.
- CAdd the new UPN suffix to the forest.
- DChange the Primary DNS Suffix option in the Default Domain Controllers Group Policy Object (GPO) to contoso.com.