Which two describe how media resources and audio streams operate with Cisco Unified Communications Manager? (Choose two.

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Which two describe how media resources and audio streams operate with Cisco Unified Communications Manager? (Choose two.)

A. Audio streams are terminated differently depending on the signaling protocol, such as SCCP or SIP.
B. Audio streams are always terminated by media resources.
C. All media resources register with Cisco Unified Communications Manager.
D. There are no situations in which IP phone-to-IP phone audio streams will go directly between endpoints.
E. Signaling between Cisco Unified Communications Manager and hardware media resources uses the same protocol as the call-signaling type.