Which of the following statements is true about blind addressing in Cisco Unity Connection?

Which of the following statements is true about blind addressing in Cisco Unity Connection?

A.
Blind addressing is used when the voice-mail user at the remote system is unavailable.

B.
Spell-by-name is not available when blind addressing is used, because the destination user is
unknown to the system.

C.
When blind addressing is used, the validity of the destination user is known to the originating
voice-mail system before sending the message

D.
Blind addressing is only used when networking with Cisco Unity Express systems.

Explanation:
You can use blind also if you make networking with another Unity Connection.
For exclusion the answer is Spell-by-name.