Your company has a single Active Directory domain named contoso.com. All servers in the domain run Windows Server 2008.  The DNS service is installed on two domain controllers named DC1 and DC2. Both DNS servers host Active DirectoryCintegrated zones that are configured to allow the most secure updates only. DC1 has Key Management Service （KMS） installed and activated.  You discover that the service locator records from the contoso.com zone hosted on DC1 and DC2 are missing.  You need to force registration of the KMS service locator records in the contoso.com zone. What should you do？（）

• A、Configure the contoso.com zone to accept non-secure updates.
• B、On DC1 at the command prompt， run the slmgr.vbs Crearm script.
• C、On DC1 at the command prompt， run the net stop sppsvc command， and then run the net start sppsvc command.
• D、On DC2 at the command prompt， run the net stop netlogon command， and then run the net start netlogon command.