A corporate network includes an Active Directory Domain Services (AD DS) forest that
contains two domains. All servers run Windows Server 2008 R2. All domain controllers are
configured as DNS servers.
A standard primary zone for dev.contoso.com is stored on a member server.
You need to ensure that all domain controllers can resolve names from the dev.contoso.com
zone.
What should you do?

A.
On one domain controller, create a secondary zone.

B.
On the member server, create a secondary zone.

C.
On each domain controller, create a secondary zone.

D.
On one domain controller, create a conditional forwarder. Configure the conditional
forwarder to replicate to all DNS servers in the domain.