Which of the following statements are correct regarding National Electoral Roll Purification and Authentication Programme (NERPAP)?
1. NERPAP is voter registration project of the ministry of Home affairs.
2. The Election Commission first tried the Aadhaar-voter ID linking in 2015 when it launched the NERPAP to address the duplicate entries in electoral rolls.
3. Supreme Court, in an interim order held that the mandatory use of Aadhaar should only be for welfare schemes and PAN linking and following this order, the NERPAP exercise was discontinued.