Which of the following statements about the CEEW report on India's climate policies is/are correct?

1. India’s current climate policies are expected to reduce CO2 emissions by around 4 billion tonnes between 2020 and 2030.
2. Policies promoting renewable energy in the power sector are projected to drive a 50% decline in coal-based power generation by 2030.
3. India pledged to reduce emissions by 1 billion tonnes by 2030 at COP26 held in Glasgow, Scotland, in 2021.