The correct option is A Chlorofluoro carbons
Chlorofluoro carbon is the pollutant released from air-conditioner, refrigerator etc.
Its use causes ozone depletion.
The examples of CFCs include dichloro difluoro methane CCl2F2, trichloro fluoro methane CCl3F and chloro difluoro methane CHClF2.
CFCs are also called Freons.