A Key Step in the Destruction of Ozone by Chlorofluorocarbons

A key step in the destruction of ozone by chlorofluorocarbons is

A) carbon atoms react with ozone.
B) the chlorofluorocarbon molecule separates, resulting in free carbon which produces a greenhouse effect.
C) radiation from the sun separates chlorofluorocarbon, resulting in free chlorine.
D) radiation from the sun breaks down O₃ molecules.
E) the chlorofluorocarbon molecule directly combines with atmospheric ozone.