Given below are two statements:
Statement $I$: Chlorofluorocarbons breakdown by radiation in the visible energy region and release chlorine gas in the atmosphere which then reacts with stratospheric ozone.
Statement $II$: Atmospheric ozone reacts with nitric oxide to give nitrogen and oxygen gases,which add to the atmosphere.
For the above statements choose the correct answer from the options given below :

• A
  Both statement $I$ and $II$ are correct
• B
  Both statement $I$ and $II$ are false
• C
  Statement $I$ is correct but statement $II$ is false
• D
  Statement $I$ is incorrect but statement $II$ is true