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 PI
F . An SCCP phone user will always be prompted for a user ID and PI
H . The scenario is invalid.
Answer: AC