What should you do?

You work as the network administrator at Domain.com. The Domain.com network consists of a single Active Directory forest containing a single domain named Domain.com. Domain.com has its headquarters located in London and branch office located in Paris. All servers on the Domain.com network run Windows Server 2008 and all client computers run Windows Vista.
One of the administrators in your department created an Active Directory-integrated zone for Domain.com. Domain.com has recently acquired a UNIX-based DNS server named CERTKILLER-SR01. During the course of the business day you receive an instruction from the CIO to configure the Windows Server 2008 organization. Domain.com plans to make use of this configuration to permit zone transfers of the Domain.com zone to CERTKILLER-SR01.
What should you do?

A.
You should consider having recursion disabled in the DNS Manager console.

B.
You should consider having a stub zone created in the DNS Manager console.

C.
You should consider having a secondary zone created in the DNS Manager console.

D.
You should consider having BIND secondaries enabled in the DNS Manager console.