Which two statements about Cisco Unified Presence integration are true? (Choose two.)

A.
Cisco Unified Communications Manager 5.x/6.x standalone supports the Cisco IP Phone Messenger Application.

B.
Native presence features include speed-dial presence, call history presence, and presence policy. They can be implemented without any extra hardware on Cisco Unified Communications Manager 5.x/6.x.

C.
Cisco Unified Personal Communicator provides a single interface for voice and video calls, voicemail playback, web conferencing, and integrated directories. In order to implement these features you will need Cisco Unified Communications Manager 5.x/6.x, Cisco Unified Presence, Cisco Unified Personal Communicator, Cisco Unified Meeting Place Express, and Cisco Unity Connection.

D.
In order to integrate Microsoft Office Communicator and Office Communications Server, you will need Cisco Unity Connection.