Which Are Correct Descriptions of Lighting System Sensor Operation

Multiple Choice

Which are correct descriptions of lighting system sensor operation?

A) People in office workstations cannot be seen by infra-red, microwave and acoustic sensors
B) Frequent switching of fluorescent lighting does not work
C) Correctly placed occupancy sensors ensures safe access at all times and fluorescent lamps switch on very quickly
D) Fluorescent lamps take too long to switch on for automatic sensing systems to work efficiently and people have to walk into a dark room
E) Unoccupied rooms should not remain without lighting as they are an invitation to burglars