3. In the context of crop residue burning in India, consider the following statements:
- 1.Punjab accounts for the maximum on-farm crop residue burning among all the states.
- 2.Among the different crops, the percentage of residue burning is the highest for wheat.
- 3.Crop residue burning is a punishable offence.
- 4.India has a national policy for the management of crop residue.
Which of the statements given above is/are correct?