Your company has a main office and a branch office.   The network contains an Active Directory domain named contoso.com. The DNS zone for contoso.com is  configured as an Active Directory-integrated zone and is replicated to all domain controllers in the  domain.   The main office contains a writable domain controller named DC1. The branch office contains a read-only  domain controller （RODC） named RODC1. All domain controllers run Windows Server 2008 R2 and are  configured as DNS servers.   You uninstall the DNS server role from RODC1.   You need to prevent DNS records from replicating to RODC1.  What should you do（）

• A、Modify the replication scope for the contoso.com zone.
• B、Flush the DNS cache and enable cache locking on RODC1.
• C、Configure conditional forwarding for the contoso.com zone.
• D、Modify the zone transfer settings for the contoso.com zone.