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（）
- AThe Dcpromo.exe utility
- BThe Server Manager console
- CThe Computer Management console
- DThe Active Directory Sites and Services console
- EThe Active Directory Domains and Trusts console