What should your subsequent step be?

You are employed as the network administrator at Domain.com. The Domain.com network consists of a single Active Directory site named CertKiller-north.com.
Due to the company expanding you create another Active Directory site named CertKiller-south.com. You receive an instruction from the CIO to configure Active Directory replication between CertKiller-north.com and CertKiller-south.com. To accomplish this you decide to install a new domain controller. After the installation you create the site link between CertKiller-north.com and CertKiller-south.com.
What should your subsequent step be?

A.
You need to consider decreasing the site link cost between CertKiller-north.com and CertKiller- south.com.

B.
You need to consider configuring the new domain controller as a preferred bridgehead server for CertKiller-north.com.

C.
You need to consider configuring a new site link bridge object.

D.
You need to consider assigning a new IP subnet to CertKiller-south.com.

Explanation:
Thereafter the new domain controller object should be moved to CertKiller-south.com.