Match the following components of an
Integrated Farming System with their potential outputs/benefits:
| List I (Component) | List II (Output/Benefit) |
| 1. Dairy Farming | (i) Fertilizes fish ponds and crop fields |
| 2. Sericulture | (ii) Provides protein-rich food and pond aeration |
| 3. Duck Rearing | (iii) Produces silk and provides mulberry leaves as feed |
| 4. Biogas Plant | (iv) Generates cooking fuel and organic slurry |