Which of the following statement regarding ozone layer within the atmosphere is/are correct? 1. It absorbs most of the Ultraviolet radiation found the Sun's rays. 2. Chlorofluorocarbons are serious threat to the ozone layer. Select the correct answer using the codes given below

• A. Only 1
• B. Only 2
• C. Both 1 and 2
• D. Neither 1 nor 2