Which of the following are tasks handled by a display manager like XDM or KDM? (Choose TWO correct answers.)

A.
Lock the screen when the user was inactive for a configurable amount of time.

B.
Handle the login of a user.

C.
Configure additional devices like new monitors or projectors when they are attached.

D.
Start and prepare the desktop environment for the user.

E.
Create an X11 configuration file for the current graphic devices and monitors.