You need to ensure that the client computers that have Office Communicator 2007 R2 installed can use IM and presence and can join web conferences hosted on Lync Server 2013. The solution must minimize administrative effort.
What should you do?
A. Implement Communicator Web Access Server.
B. Modify the client version policy to allow all versions of Office Communicator 2007 R2 to connect,
C. Upgrade the computers to Lync 2010.
D. Apply the latest hotfixes to Office Communicator 2007 R2
