Your network contains a single Active Directory forest. The forest contains two domains named  contoso.com and sales.contoso.com. The domain controllers are configured as shown in the  following table：     Server name  Domain   DNS zones hosted   DC1  contoso.com  contoso.com   DC2  contoso.com  contoso.com   DC3  sales.contoso.com  sales.contoso.com   DC4  sales.contoso.com  sales.contoso.com   All domain controllers run Windows Server 2008 R2. All zones are configured as Active Directory-   integrated zones.   You need to ensure that contoso.com records are available on DC3.     Which command should you run（）

• A、dnscmd.exe DC1.contoso.com /ZoneChangeDirectoryPartition contoso.com /domain
• B、dnscmd.exe DC1.contoso.com /ZoneChangeDirectoryPartition contoso.com /forest
• C、dnscmd.exe DC3.contoso.com /ZoneChangeDirectoryPartition contoso.com /domain
• D、dnscmd.exe DC3.contoso.com /ZoneChangeDirectoryPartition contoso.com /forest