Your company has a Berkley Internet Name Domain （BIND） DNS server named Server1 that hosts the contoso.com DNS zone.You plan to replace Server1 with a DNS server named Server2 that runs Windows Server 2003 Service Pack 2 （SP2）.  You need to configure DNS on Server2 to meet the following requirements： （1）Retain all resource records currently in the contoso.com zone.  （2）Allow updates to resource records for the contoso.com zone on Server2.  What should you do？（）

• A、On Server2， configure a primary zone for contoso.com.
• B、On Server2， configure a secondary zone for contoso.com. Configure the contoso.com zone on Server2 as a primary zone.
• C、Copy the contoso.com.dns file from Server1 to the %systemroot%/System32/DNS folder on Server2. On Server2， restart the DNS Server service.
• D、Copy the contoso.com.dns file from Server1 to the %systemroot%/System32/DNS folder on Server2. On Server2， create a secondary zone for contoso.com.