Cisco Unified Presence Release 6.0 is being installed. Which two tasks must be accomplished prior to installation? (Choose two.)

A.
Ensure that the associated Cisco Unified Communications Manager server is running Release 5.0(4) or later.

B.
Ensure that access to a Secure FTP server to back up Cisco Unified Presence over a network is available.

C.
Activate the required Cisco Unified Presence services, including Cisco Unified Presence SIP proxy and presence engine.

D.
Add the Cisco Unified Presence server as an application server on the Cisco Unified Communications Manager publisher.