In which two scenarios would a caller who is calling into the Cisco Unity Connection general pilot
number hear the opening greeting of the voice-mail system and be prompted for a user ID and PIN?
(Choose two.)

A.
non-subscriber

B.
subscriber who sends the calling number

C.
subscriber who does not send the calling number

D.
A SIP phone user will always be prompted for a user ID and PIN.

E.
An SCCP phone user will always be prompted for a user ID and PIN.

F.
The scenario is invalid.