Which statement is correct when making preliminary adjustments to the vertical height of the display for a pedestal stand-mounted Cisco TelePresence System 500? (choose two)

A.
Raise the pedestal stand to its maximum height

B.
Ensure that the user is at least 4 feet (1,2 m) away from the display

C.
The distance between eye level and the floor is 48 inches if the user height is unknown

D.
Ensure that the user is at least 4 feet (1,2 m) away from the disply and that the display height is set to 52 inches