Which among the following phenomena can occur when very warm and humid air is rising over a mass of a very cold air? 1. Calm weather 2. Snowfall 3. Storms and cyclonic storms 4. Intense rain and hail. Select the correct answer using the code given below : Code :

• A. 1 and 2
• B. 2 and 3
• C. 3 and 4
• D. 1 and 4