Consider the following statements
1. Megalithic Burials are extensively found in Southern India.
2. Iron Age in pre-historic India is contemporary to Megalithic Burials.
3. Chalcolithic communities founded the first villages in India and cultivated far more cereals than is known in the case of the Neolithic community.
Which of the statements given above is/are correct?
1. 1 only
2. 3 only
3. 2 and 3 only
4. 1, 2 and 3