Your network has Lync Server 2010 deployed.
You deploy dial-in conferencing.
You need to provide the dial-in conferencing information to all the users on the network.
What should you run?

A.
lcscmd /server /action:broadcastmessage

B.
ocsumutil /ou:users

C.
the New-CsAnnouncement cmdlet

D.
the Set-CsPinSendCAWelcomeMail cmdlet