Which of the following are the key features of 'National Ganga River Basin Authority (NGRBA)? 1. River basin is the unit of planning and management. 2. It spearheads the river conservation efforts at the national level. 3. One of the Chief Ministers of the States through which the Ganga flows becomes the Chairman of NGRBA on rotation basis. Select the correct answer using the code given below.

1. Statement 1 is correct. The National Ganga River Basin Authority (NGRBA), established in 2009, adopted the river basin as the unit for planning and management to address pollution and conservation issues in a holistic manner. 2. Statement 2 is correct. The NGRBA was set up as an empowered planning, financing, monitoring and coordinating authority for the Ganga River, mandated to ensure effective abatement of pollution and conservation of the river. It was intended to spearhead river conservation efforts at the national level for the Ganga. 3. Statement 3 is incorrect. The Chairman of the NGRBA was the Prime Minister of India. The Chief Ministers of the States through which the Ganga flows were members of the Authority, but they did not chair it on a rotation basis. (Note: NGRBA was later replaced by the National Ganga Council under the National Mission for Clean Ganga).