Q. Consider the following statements regarding environmental issues of India :1. Gulf of Mannar is one of the biosphere reserves.2. The Ganga Action Paln, phase II has been merged with the National River     Conservation Plan.3. The National Museum of Natural History at New Delhi imparts non-formal       education in envionment and conservation.4. Environment Information System (ENVIS) acts as a decentralised                 information network for environmental information.Which of these statements are correct ? 

1. 1,2 and 4
2. 1,2,3 and 4
3. 2 and 3
4. 1,3 and 4