Which action must you perform before you update Cisco Unified Communications Manager using BAT?

A.	Create or edit a CMC or FAC CSV file and insert the file in BAT.
B.	Put Cisco Unified CM in BAT service mode.
C.	Temporarily disconnect all non-BAT related servers, such as Cisco Presence.
D.	Enable promiscuous mode on the Cisco Unified CM BAT database.