What configuration change must you make to change an existing ClusterXL cluster object from Multicast to Unicast mode?

What configuration change must you make to change an existing ClusterXL cluster object from Multicast to Unicast mode?

A.
Reset Secure Internal Communications (SIC) on the cluster-member objects. Reinstall the Security Policy.

B.
Run cpstop and cpstart, to re-enable High Availability on both objects. Select Pivot mode in cpconfig.

C.
Change the cluster mode to Unicast on the cluster object. Reinstall the Security Policy.

D.
Change the cluster mode to Unicast on each of the cluster-member objects.