What should you do?

Domain.com has hired you as a systems administrator for their network. 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 receive an instruction from the CIO to establish a replication scenario with reference to three domains as well as three sites without creating it manually.
What should you do?

A.
You should use site links.

B.
You should use sites.

C.
You should use subnets.

D.
You should use connection objects.

Explanation:
The connection objects are created automatically by the Active Directory replication engine as standard. You can decide whether or not to override the default behavior of Active Directory replication topology by creating Connection objects manually; however this step is not necessary.