Your network contains an Active Directory forest. The forest contains one domain and three sites.  Each site contains two domain controllers. All domain controllers are DNS servers.     You create a new Active Directory-integrated zone.     You need to ensure that the new zone is replicated to the domain controllers in only one of the  sites.   What should you do first（）

• A、Modify the NTDS Site Settings object for the site.
• B、Modify the replication settings of the default site link.
• C、Create an Active Directory connection object.
• D、Create an Active Directory application directory partition.