Consider the following pairs:
| S.No | Pollutant | Disease |
| 1 | Nitrate | Blue baby syndrome |
| 2 | Cadmium | Black foot disease |
| 3 | Arsenic | Itai-Itai disease |
| 4 | Mercury | Minamata disease |
Which of the pairs given above are correctly matched?
1
1 and 2 only
2
2, 3 and 4 only
3
1 and 4 only
4
1, 2, 3 and 4
5
Not Attempted