Gases commonly referred as greenhouse gases are : 1. \[C{{H}_{4}}\] 2. \[C{{O}_{2}}\] 3. CFC 4. \[N{{H}_{3}}\] Which of the above is/are correct?

• A.  1 and 4           
• B.  2 and 3
• C.  1, 2 and 3                    
• D.  All of these