In a certain type of smoke detector, a light source and a photosensitive sensor are so arranged that the rays from the light source do not normally fall on the photosensitive sensor. When smoke particles enter the light path, some of the light is scattered by reflection and refraction onto the sensor, causing the detector to respond. What is the names of this type of smoke detector?
A. photosensitive light scattering smoke detector
B. reflective light scattering smoke detector
C. refracted light scattering smoke detector
D. photoelectric light scattering smoke detector
Answer: C. refracted light scattering smoke detector
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