our company has a domain controller that runs Windows Server 2008 R2 and the DNS role.The DNS domain is named contoso.com.You need to ensure that inquiries about contoso.com are sent to dnsadmin@contoso.com. What should you do？（）

• A、Create a Signature (SIG) record for the domain controller.
• B、Modify the Name Server (NS) record for the domain controller.
• C、Modify the Service Location (SRV) record for the domain controller.
• D、Modify the Start of Authority (SOA) record on the domain controller.