A company plans to use eDiscovery in SharePoint. The environment includes Microsoft Lync
Server 2013 and Microsoft Exchange Server 2013. Lync Server is configured to archive
conversations to Exchange Server. You configure Exchange Server for eDiscovery. You
need to complete the eDiscovery configuration. What should you do? (Each correct answer
presents part of the solution. Choose all that apply.)

A.
Configure a trust relationship between SharePoint Server and Lync Server.

B.
Create a SharePoint connector in the Exchange Server management shell.

C.
Install the SharePoint Web Services API on every server that runs Exchange Server.

D.
Configure a trust relationship between SharePoint Server and Exchange Server.

E.
Install the Exchange Web Services API on every SharePoint front-end web server.

F.
Create an Exchange eDiscovery service application in Central Administration.

Explanation:
* If you will use a SharePoint eDiscovery Center to discover content in Exchange Server,
you must configure SharePoint Server 2013 and Exchange Server to interact.
Perform the following steps:
(E) Ensure that the Exchange Web Service managed API is installed on every front-end
server that is running SharePoint Server 2013.
(D) Configure a trust relationship between Server 2013 and Exchange Server. If you want
content from Lync Server 2013 to be discoverable, configure Lync Server 2013 to archive to
Exchange Server 2013. (this step has already been done here)
Perform the eDiscovery configuration steps for Exchange. (this step has already been done
here)

Reference: Configure communication between SharePoint Server 2013 and Exchange Server 2013