Which two statements are correct when discussing light measurement recommendations for a Cisco Telepresence System 1100 room? (choose two)

A.
Overall illumination should be measured with the light sensor pointed at the ceiling

B.
When measuring overall illumination in the room the light range should be between 250 and 800 lux

C.
Generally shoulder lighting should be no more than 3 times greater than the overall illumination of the room

D.
Overall illumination of the room should never exceed 900 lux

E.
The overall illumination target with the auto features disabled is between 250 and 460 lux