The formation of ozone hole in the Antarctic region has been a cause of concern . What could be the reason for the formation of this hole ?

• A. Presence of prominent tropo-spheric turbulence; and inflow of chlorofluorocarbons
• B. Presence of prominent polar front and stratospheric; clouds: and inflow of chlorogluorocarbons
• C. Absence of Polar front and Stratospheric clouds; and inflow of methane and chlorofluorocabons
• D. Increased temperature at polar region due to global warming.