Refer to the exhibit. 
What is the reason that Cisco Unity Connection fails to find the Cisco Unified Communications
Manager user with extension 6654?
A.
The user has already been imported into the Cisco Unity Connection database.
B.
The user has a Primary Extension correctly configured.
C.
The user has not been synchronized with Cisco Unity Connection.
D.
The user is not a member of the Standard CTI Enabled user group.
Explanation: