Which statement is correct when discussing the Cisco Telepresence System 500?

Which statement is correct when discussing the Cisco Telepresence System 500?

A.
If the user is able to see any of the poitioning LED’s while seated, then the user is out of camera view

B.
To view auto-collaboration presentations from the remote room, you must habe a secondary LCD display

C.
The system must be placed in a position so that the participant is eight feet from the display

D.
If the user cannot see any of the poitioning LED’s while seated, then the user is out of camera view