What should you do first?

Your network has Lync Server 2010 deployed.
The network contains a server named Server1 that runs Windows Server 2008 R2.
Server1 is a member of a workgroup.
You need to deploy the Edge Server role on Server1.
What should you do first?

A.
From the Lync Server 2010 Topology Builder, save a copy of the topology.

B.
From the Lync Server 2010 Topology Builder, create a trusted application pool.

C.
From the Lync Server Management Shell, run the Export-CsConfiguration cmdlet.

D.
From the Lync Server Management Shell, run the New-CsAVEdgeConfiguration cmdlet.

Explanation:
http://technet.microsoft.com/en-us/library/gg398627.aspx

http://technet.microsoft.com/en-us/library/gg398983.aspx