DrRowland and Dr $\mathrm { O } _ { 2 }$

Dr.Rowland and Dr.Molina

A) first stated the photochemistry interactions of chlorofluorocarbons and $\mathrm { O } _ { 2 }$ .
B) found automobile exhaust and sunlight were producing photochemical smog.
C) first wrote about the possible destruction of ozone in the year 1989.
D) are not mentioned in the text.
E) do not study ozone.