Your company has an active directory domain named ad.contoso.com. the company also has a public namespace named contoso.com. you need to ensure that public DNS zone records cannot be copied. You must achieve this goal without impacting the functionality of public DNS name resolutions. What should you do?（）

• A、Disable the notify feature for the contoso.com zone.
• B、Disable the allow-read permission for the everyone group on the contoso.com DNS domain.
• C、Configure the all domain controllers in the domain zone replication option on ad.contoso.com.
• D、Configure the allow zone transfers only to servers listed on the named servers option on contoso.com.