According to the State of India's Environment Report 2023, by how much had the average life expectancy of Indians decreased by the year 2020 due to air pollution?

Consider the following statements regarding the report released by the Centre for Research on Energy and Clean Air (CREA) for March 2026: I. Gurugram emerged as the most polluted city in India, recording a monthly average PM2.5 level of 116 µg/m³. II. Ghaziabad remained the most polluted city overall for the entire 2025-26 financial year. III. Dehradun reported the largest reduction in PM10 levels (75%) compared to the baseline under the National Clean Air Programme (NCAP). Which of the statements given above are correct?

According to the Centre for Research on Energy and Clean Air (CREA) report, which city recorded the highest monthly average PM2.5 level in India for March 2026?