What is the correct procedure for adding a new a subscriber on a Cisco Unity for Domino system?

What is the correct procedure for adding a new a subscriber on a Cisco Unity for Domino system?

A.
You create the subscriber through the Cisco Unity System Administrator and Cisco Unity creates the Domino account.

B.
You confirm the person has a Domino account and import them into Cisco Unity through the Cisco Unity System Administrator.

C.
You confirm your Cisco Unity System Administrator Account has the correct class of service rights to add accounts in Domino.

D.
You confirm the Cisco Unity For Domino connector is functioning and create the subscriber through the Cisco Unity System Administrator