Your company has a branch office that is configured as a separate Active Directory site and has  an Active Directory domain controller.     The Active Directory site requires a local Global Catalog server to support a new application.     You need to configure the domain controller as a Global Catalog server.     Which tool should you use（）

• A、The Dcpromo.exe utility
• B、The Server Manager console
• C、The Computer Management console
• D、The Active Directory Sites and Services console
• E、The Active Directory Domains and Trusts console