Your network contains a domain controller named DC1.
DC1 hosts a zone named contoso.com. The properties of the zone are shown in the exhibit. (Click the Exhibit button.)
You need to ensure that only secure dynamic updates are accepted for the contoso.com zone.
What should you do first?
A. Modify the NTFS permissions of the zone file.
B. Change the zone to a secondary zone.
C. Configure the zone to be stored in Active Directory.
D. Pause the zone.
