Which of the following are correctly matched?
1. Viena : protection
convention : of ozone layer
2. Stockholm : Hazardous wastes
convention and their disposal
3. Rotterdam : Hazardous
convention chemicals
4. Basel : persistent organic
convention pollutants

A

1 and 2

B

1 and 3

C

2, 3 and 4

D

1, 2 and 4