Which among the following phenomenas 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 codes given below

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