Chlorofluro carbons are effective scavengers for ozone due to
A. Photolytic reaction of `O_(2)` producing `Cl` radicals
B. Photolytic decomposition of `O_(2)` producing `O_(3)`
C. Photolytic decomposition of `O_(3)` by `Cl` into `O_(2)`
D. Photolytic production of oxides of nitrogen
