Your network consists of a single Active Directory domain.You have a domain controller named Server1 that runs Windows Server 2003 Service Pack 2 (SP2).The DNS service is installed on Server1. Server1 contains only Active Directory-integrated zones. Zone transfers are disabled for all zones.You need to back up the DNS zones on Server1. What should you do? （）
- AFrom a command prompt, run Nslookup.exe.
- BFrom Windows Backup, back up the system state.
- CFrom Windows Backup, back up %SystemRoot%\System32\DNS.
- DFrom the DNS snap-in, right-click Server1 and then click Export List.