Which database should you include in the recommendation?

You need to recommend a backup solution for the configuration store of the Lync Server 20 10 deployment. Which database should you include in the recommendation?

A.
RTCLocalrtc

B.
RTCLocalrtcdyn

C.
RTCxds

D.
RTCrtc

Explanation:
The repository is implemented as an SQL database (xds). It is recommended to install CMS on an Enterprise Edition (EE) pool so that it benefits from the high availability built into the Enterprise Edition. In such a configuration the master xds database is located in the same SQL Server instance as the backend databases, typically RTC. If CMS is installed on a Standard Edition (SE) pool the master xds database will be located in the normal SQL Express instance called RTC. (http://blogs.technet.com/b/jenstr/archive/2010/10/13/what-is-central-management-store-cms.aspx, http://lyncinsider.com/conferencing/backup-and-restore-lync-server-20-tasks-every-lync-administrator-must-know/)