Which of the following is/are correct about Loktak lake

1. It is located in Manipur

2. It is a Ramsar site

3. It is famous for the phumdis which is heterogeneous mass of vegetation, soil, and organic matter at various stages of decomposition floating over it.

4. Keibul Lamjao which is the only floating national park in the world is on this lake

Select the correct answer using the codes given below: