What is the likely reason?

You are the newly appointed network 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 and all client computers run Windows Vista.
You are responsible for managing three domain controllers named CERTKILLER-DC01,
CERTKILLER-DC02 and CERTKILLER-DC03. During routine monitoring you discover that these domain controllers always have Knowledge Consistency Checker (KCC) errors popping up in the directory services Event Viewer log. You need to establish the reason for this predicament.
What is the likely reason?

A.
This will occur due to problems linked with Global Catalog placement.

B.
This will occur due to DNS problems.

C.
This will occur due to Replication problems.

D.
This will occur due to Name resolution problems.

Explanation:
Due to the nature of KCC errors it is vital to realize that they directly relate to replication problems, site linkage issues, et cetera. KCC errors pinpoints replication problems.