You have a domain controller named DC1 that runs Windows Server 2008 R2. DC1 is con?gured as a DNS server for contoso.com.

You install the DNS server server role on a member server named server1 and then you create a standard secondary zone for contoso.com. You con?gure DC1 as the master server for the zone.

You need to ensure that Server1 receives zone updates from DC1.

What should you do

A.
On DC1, modify the permissions of contoso.com zone.

B.
On Server1, add a conditional forwarder.

C.
Add the Server1 computer account to the DNsUpdateProxy group.

D.
On DC1, modify the zone transfer settings for the contoso.com zone.