Answer:
C. UV light
Step-by-step explanation:
Some air purifiers use catalyzed ultraviolet light to disinfect the air. In oxidative processes with ultraviolet radiation (UV), high quality UV lamps, yield and radiation react with titanium that catalyzes the "burning" of microorganisms, odors and impurities difficult control by the usual systems.
Ultraviolet light eliminates the formation of mold in the air conditioning system, reduces the incidence of viruses and bacteria, preventing their multiplication and disinfects air that passes through the air conditioning system.