A factory was started near a village. Suddenly villagers started feeling the presence of irritating vapors in the village and cases of headache, chest pain, cough, dryness of throat and breathing problems increased. Villagers blamed the emissions from the chimney of the factory for such problems. What does the symptoms indicate?

Options

1. AThe symptoms observed in villagers indicate that the place is severely effected by the greenhouse effect
2. BThe symptoms observed in villagers indicate that acid rain takes place there
3. CThe symptoms observed in villagers indicate that oxides of carbon are released from the chimney of the factory
4. DThe symptoms observed in villagers indicate that oxides of nitrogen and sulfur are released from the chimney o