Question- Cl atoms formed via photolysis in the stratosphere of C-Cl bonds of chlorofluorocarbons are particularly effective in destroying ozone at these altitudes because Select one-

a. Cl atoms absorb UV which generates O atoms to react with O2 to produce ozone.

b. Cl atoms catalytically convert O3 to O2

c. Cl atoms stoichiometrically convert O3 to O2

d. Cl atoms react with H atoms which catalyse conversion of O2 to O3

e. Cl atoms react with N atoms which catalyse conversion of O2 to O3

I have read my textbook moreover I still don't understand so please provide me a very condensed, simple to know answer?