What should you do to make sure that the replication of the Domain.com zone is encrypted without the loss of zone data?

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.

Domain.com currently makes use of a computer named CERTKILLER-SR01 and CERTKILLER- SR02 that is configured as DNS servers.

Domain.com currently has the Standard Primary zone for Domain.com on CERTKILLER-SR01 and the Standard Secondary zone for Domain.com on CERTKILLER-SR02. During the course of the day you receive instruction from Domain.com to make sure that the replication of the Domain.com zone is encrypted without the loss of zone data.

What should you do?

A.
You should consider having the interface changed where the DNS server listens on both servers.

B.
You should consider having the zone transfer settings configured on the standard secondary zone.
You should then have the Schema master servers lists modified on the primary zone.

C.
You should consider having a stub zone.
You should then have the secondary zone deleted.

D.
You should consider having the primary zone converted to active directory zone.
You should then have the secondary zone deleted.

Explanation:
In the scenario you should have the Domain.com primary zone converted to an active directory- integrated zone and delete the secondary zone as this would ensure replication of the Domain.com zone is encrypted whilst preventing data loss.