You have an Active Directory domain named contoso.com.
You have a domain controller named Server1 that is configured as a DNS server.
Server1 hosts a standard primary zone for contoso.com. The Zone Aging/Scavenging
Properties of the contoso.com zone are shown in the exhibit. (Click the Exhibit button.)

You discover that stale resource records are not automatically removed from the
contoso.com zone.
You need to ensure that the stale resource records are automatically removed from the
contoso.com zone.
What should you do?

A.
Convert the contoso.com zone to an Active Directory-integrated zone.

B.
set the scavenging period of Server1 to 0 days.

C.
Configure the aging properties for the contoso.com zone.

D.
Modify the Server Aging/Scavenging properties.