A user gets the following error on the IP phone:
[205]-User Profile Absent
What could be the probable cause?

A.	The user profile is missing.
B.	The device profile is not attached to the user.
C.	The Enable Extension Mobility option is not enabled in the phone configuration window.
D.	User ID and password are incorrectly entered on the phone.
E.	User is assigned to another phone.
F.	User is logged on to another phone.