Which statement is correct when discussing the camera target placement for the Cisco TelePresence System 500?

Which statement is correct when discussing the camera target placement for the Cisco TelePresence System 500?

A.
Do not set the easel and large target in the position that the user will occupy

B.
Use the distance measured from the camera to the head of the user to position the target. If the distance is unknown, use 1,5 meters (5 feet)

C.
The user must be at least 8 feet (2,4 meters) away from the display

D.
Raise or lower the target so that the green rectangle that displays on the screen is at the approximate eye level of the user