Your network contains an Active Directory domain named contoso.com. The contoso.com DNS  zone is stored in Active Directory. All domain controllers run Windows Server 2008 R2.     You need to identify if all of the DNS records used for Active Directory replication are correctly  registered.     What should you do（）

• A、From the command prompt， use netsh.exe.
• B、From the command prompt， use dnslint.exe.
• C、From the Active Directory Module for Windows PowerShell， run the Get-ADRootDSE cmdlet.
• D、From the Active Directory Module for Windows PowerShell， run the Get-ADDomainController cmdlet.