CFC's Such as CF₂Cl₂, Are Associated with the Increase in Chemical

CFC's such as CF₂Cl₂, are associated with the increase in chemical activity that degrades ozone. Which of the following relates to this phenomenon?

A) This is not serious because the only area of the planet involved is at the poles and there is very little life to be affected by the increase in UV.
B) The catalyzing of the ozone breakdown decreases the amount of UV at the surface of the planet.
C) The process by which the ozone is degraded is catalytic and can be controlled by the reduction of CFC's.
D) All of these responses are correct.