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 two computer named CERTKILLER-DC01 and CERTKILLER-DC02 in the London office which have the DNS Server role installed.
Domain.com additionally deployed a computer named CERTKILLER-DC03 configured as a Read-only Domain Controller (RODC) which has the DNS Server role installed and configured with Active Directory-integrated zones. During the course of the day you receive instruction from Domain.com to configure secure updates on the DNS servers whilst ensuring that CERTKILLER- DC03 is configured to accept dynamic DNS updates.
What should you do?

A.
You should consider having CERTKILLER-DC03 the Read-only Domain Controller (RODC) reconfigured to allow dynamic updates.

B.
You should consider having the dnscmd/ZoneResetType command run at the command prompt on CERTKILLER-DC03.

C.
You should consider having an active partition created and configured on CERTKILLER-DC01 to store the Active Directory-integrated zones.

D.
You should consider having Active Directory Domain services uninstalled in CERTKILLER- DC03.

Explanation:
You should then re-install Active Directory as a writeable domain controller.

In order to enable the dynamic DNS updates on CERTKILLER-DC03 you need uninstall the Active Directory Domain services on CERTKILLER-DC03. Thereafter you can reinstall it as a writeable domain controller. A writeable domain controller performs originating updates and outbound replication.