Which two prerequisites and considerations must be met prior installing Avaya IX™ Messaging? (Choose two.)

Which two prerequisites and considerations must be met prior installing Avaya IX™ Messaging? (Choose two.)
A . Antivirus software must be installed and operating according to specifications.
B. The corporate telephone system and PBX must be installed and functioning properly.
C. The server must have the operating system installed, patched and completely updated.
D. Create all accounts on the server locally, and it doesn’t need to have any domain accounts provisioned.

Answer: B,C

Explanation:

Reference: http://www.esna.com/services/education/IX_Messaging_10_8/TOG/RH5_IXM_TOG/IXM_TOG_System_Requirements/IXM_TOG_System_Requirements.htm