Pick out the wrong statement.

• Catalytic converter is fitted in automobiles to reduce carbon monoxide concentration in exhaust emissions.
• Inhalation of pollutant carbon monoxide results in death by asphyxiation.
• Sulphur dioxide is the main pollutant emitted from the exhaust of petrol driven automobiles.
• Decomposition of plants containing chlorophyll is a natural source of carbon monoxide in atmosphere.