Which statement is correct when tuning the cameras by using the WebGUI of the Cisco TelePresence codec?

A.
If there is a noticeable flicker on the screen, the 50Hz Flicker Reduction button will eliminate the flicker and improve the image quality

B.
If the user is 1.2 to 1.5 meters (four to five feet) away from the display, click the 4 feet radio button for the Focus Distinct radio choice, if the user is farther than 1.5 meters (five feet) away click the 6 feet choice

C.
If the room uses outside lighting, click the Disable radio button for the Camera Auto Brightness and Camera Auto Color Balance choices

D.
Auto Color Balance can produce the best results when the colors of the walls in your room are white or gray