Users of a Cisco Unified Presence solution are configured with directory synchronization. What is required for Cisco Unified Personal Communicator logins to authenticate with the directory?
A.
a secure link with Cisco Unified Communications Manager database
B.
LDAP authentication enabled on Cisco Unified Presence
C.
DC-Directory authentication with Cisco Unified Communications Manager
D.
LDAP authentication enabled on Cisco Unified Communications Manager