Which one of the following pairs is wrongly classified?

• A. Positive effect on the environment Negative effect on the environment Incinerating rubbish in residential areas Covering opened dust bins left out in the open                
• B. Positive effect on the environment Negative effect on the environment Breeding animals like chicken and sheep for food Cutting down trees                
• C. Positive effect on the environment Negative effect on the environment Collecting rainwater for watering garden plants Feeding animals in the wild                
• D. Positive effect on the environment Negative effect on the environment Using recycled material Leaving unfinished food at the canteen table