Consider the following statements about United Nations Framework Convention on Climate Change (UNFCCC).
1. Its secretariat is at Bonn.
2. It is one of the 3 'Rio Conventions' adopted at Rio Summit in year 1992.
3. UNFCCC entered into force on 21 March 1994.
4. India is a member of UNFCCC.
Which of the statements given above is/are correct?