When the ozone layer in the upper atmosphere is reduced, Earth’s natural shield against harmful ultraviolet radiation becomes weaker. Which compound would lead to the greatest depletion of the ozone layer?
- A$\text{CCl}_3\text{F}$
- B$\text{CF}_4$
- C$\text{CHClF}_2$
- D$\text{CH}_2\text{F}_2$