You have a virtual machine named VM1 that runs on a host named Host1.
You configure VM1 to replicate to another host named Host2.
Host2 is located in the same physical location as Host1.
You need to add an additional replica of VM1. The replica will be located in a different physical site.
What should you do?

A.
From VM1 on Host2, click Extend Replication.

B.
On Host1, configure the Hyper-V settings.

C.
From VM1 on Host1, click Extend Replication.

D.
On Host2, configure the Hyper-V settings.

Explanation:
http://blogs.technet.com/b/virtualization/archive/2013/12/10/hyper-v-replica-extendreplication.aspx
Once that is done, go to replica site and from Hyper-V UI manager select the VM for which you
want to extend the replication. Right click on VM and select “Replication->Extend Replication”.
This will open Extend Replication Wizard which is similar to Enable Replication Wizard.
http://technet.microsoft.com/en-us/library/dn551365.aspx
http://technet.microsoft.com/en-us/library/jj134240.aspx
NOTE: You configure a server to receive replication with Hyper-V Manager, in this situation the
replica site is assumed to be the Replica Server.
Therefore you extend replication from VM1 on Host2.