With reference to National Clean Air Programme (NCAP), consider the following statements:

1. It aims to achieve a 40% reduction target in Particulate Matter concentrations by 2026.

2. 2018 is kept as the base year for the comparison of concentration.

3. 122 non-attainment cities will be identified across the country based on the 2014-2018 Air Quality data.

4. It has the provision for the preparation of city-specific action plans.

Which of the statements given above is/are correct?