What should you do from the Lync Server Management Shell?

Your network contains an Active Directory domain.
The domain contains 500 user accounts.
You deploy Lync Server 2010 on the network.
You need to ensure that all users can sign in to Microsoft Lync 2010 and initiate IM conversations.
What should you do from the Lync Server Management Shell?

A.
Run the Get-AdUser cmdlet, and then pipe the results to the Set-CsUser cmdlet.

B.
Run the Get-Credential cmdlet, and then pipe the results to the Set-CsUser cmdlet.

C.
Run the Get-CsAdUser cmdlet, and then pipe the results to the Enable-CsUser cmdlet.

D.
Run the Get-CsUser cmdlet, and then pipe the results to the Enable-CsClientPolicy cmdlet.

Explanation:
http://blogs.technet.com/b/csps/archive/2010/06/28/wtlenableuservoice.aspx