Which of the following is/are correct about the Public Distribution System (PDS)?
1. It is an Indian food Security System established under the Ministry of Consumer Affairs, Food, and Public Distribution.
2. It helps in ensuring the Food and Nutritional Security of the nation.
3. It maintains the buffer stock of food grains in the warehouse.
1. 1 and 2
2. 2 and 3
3. 1 and 3
4. 1, 2 and 3