Your network contains an Active Directory forest. All domain controllers run Windows Server 2008 R2 and are
configured as DNS servers.
You have an Active Directory-integrated zone for contoso.com.
You have a Unix-based DNS server.
You need to configure your Windows Server 2008 R2 environment to allow zone transfers of the contoso.com
zone to the Unix-based DNS server.
What should you do in the DNS Manager console?

A.
Enable BIND secondaries

B.
Create a stub zone

C.
Disable recursion

D.
Create a secondary zone