You work as an enterprise administrator at Domain.com. The Domain.com network consists of a single Active Directory domain named Domain.com. All servers on the Domain.com network run Windows Server 2008. The Domain.com network contains two DNS servers.
The DNS servers are named CERTKILLER-SR13 and CERTKILLER-SR14. The exhibit below illustrates how the DNS servers are configured:
You receive numerous complaints from domain users that they are unable to establish a connection to Internet Web sites. You check and discover that the error occurs with the users that make use of CERTKILLER-SR14. To ensure that enhance productivity you need to ensure that the Internet name resolution is enabled for all user workstations.
What should you do?

A.
This can be accomplished by ensuring that a list of root hints servers is updated on CERTKILLER-SR14.

B.
This can be accomplished by ensuring that the .(root) zone is deleted from CERTKILLER- SR14.
Thereafter conditional forwarding should be configured on CERTKILLER-SR14.

C.
This can be accomplished by ensuring that the Cache.dns file is updated on CERTKILLER- SR14.
Thereafter conditional forwarding should be configured on CERTKILLER-SR13.

D.
This can be accomplished by ensuring that a copy of the .(root) zone is created on DNSL.