Your network contains an Active Directory domain named contoso.com. The domain
contains three Active Directory sites. The Active Directory sites are configured as shown in
the following table.

The sites connect to each other by using the site links shown in the following table.

Site link name Connected sites
You need to design the Active Directory site topology to meet the following requirements:

Ensure that all replication traffic between Site2 and Site3 replicates through Site1 if a domain
controller in Site1 is available.
Ensure that the domain controllers between Site2 and Site3 can replicate if all of the domain
controllers in Site1 are unavailable.
What should you do?

A.
Delete Link1.

B.
Delete Link2.

C.
Delete Link3.

D.
Disable site link bridging.

E.
Create one site link bridge.

F.
Modify the cost of Link2.

G.
Create one SMTP site link between Site2 and Site3.

H.
Create one SMTP site link between Site1 and Site3. Create one SMTP site link between
Site1 and Site2.