When configuring CallManager, what should be listed in the System>Server configuration page?

A.
IP addresses of all the CallManagers in the cluster.

B.
Fully Qualifies Domain Name listing of all the CallManagers in the cluster.

C.
Names of all the CallManagers in the cluster in the form CM_<hostname>

D.
Names of all the CallManagers in the cluster in the form CCM_<hostname>