which node should you create the site link?

Your network contains an Active Directory forest named contoso.com that contains a single
domain. The forest contains three sites named Site1, Site2, and Site3. Domain controllers run
either Windows Server 2008 R2 or Windows Server 2012 R2.
Each site contains two domain controllers. Site1 and Site2 contain a global catalog server.
You need to create a new site link between Site1 and Site2.
The solution must ensure that the site link supports the replication of all the naming contexts.
From which node should you create the site link? To answer, select the appropriate node in the
answer area.

Answer:

Explanation: