Which two statements about the use of the Intercluster Lookup Service in a multicluster environment are true? (Choose two.)

Which two statements about the use of the Intercluster Lookup Service in a multicluster environment are true? (Choose two.)
A . Cisco Unified Communications Manager uses the ILS to support intercluster URI dialing.
B . ILS contains an optional directory URI replication feature that allows the clusters in an ILS network to replicate their directory URIs to the other clusters in the ILS network.
C . Directory URI replication does not need to be enabled individually for each cluster.
D . To enable URI replication in a cluster, check the Exchange Directory URIs with Remote Clusters check box that appears in the SIP trunk configuration menu.
E . If the ILS and directory URI replication feature is disabled on a cluster, this cluster still accepts ILS advertisements and directory URIs from other neighbor clusters; it just does not advertise its local directory URIs.

Answer: AB