Which of the following is NOT true about the ozone?

ozone depletion allows additional harmful ultraviolet radiation to reach the
planet's surface

the main cause of ozone depletion is emissions from man-made sources of
halocarbons such as chlorofluorocarbons (CFC's)

Othere is no ozone layer anymore

international cooperation decreased the size of the ozone hole area by the end
of 2012