Please describe the Cisco Unity Express default AutoAttendant

You are CCNA VOICE associate in Certkey.com. Please describe the Cisco Unity Express default AutoAttendant

A.
The default AA must be enabled during the Initialization Wizard process

B.
Enabling the default AA is not mandatory during the Initialization Wizard process.

C.
The default AA is enabled by default with the exception of the prompts that must be recorded via AvT.

D.
The default AA cannot be used as is, and it must be customized for the particular environment it will be used in.