Excessive release of the pollutant carbon monoxide (CO) into the air may produce a condition in which oxygen supply in the human body decreases.What cause this condition ?

• A. When inhaled into the human body,CO is converted into CO2
• B. The inhaled CO has much higher affinity for haemoglobin as compared to oxygen
• C. The inhaled CO destroys the chemical structure of haemoglobin.
• D. The inhaled CO adversely affects the reapiratory centre in the brain