Which of following statements are true?

1. Haryana was the first state in the country to achieve hundred percent rural electrification in 1970 itself.

2. Haryana is the sole holder of the country’s rock salt resources.

3. “Mera Pani Meri Virasat” scheme of Haryana aims to shift farmer’s focus from growing water consuming crop like paddy to other less water requiring crops.

4. Under “Mahara Gaon-Jagmag Gaon”, more than 5000 villages in Haryana have been provided with 24 hour power supply.