question_answer

Carbon monoxide is a poisonous gas which when inhaled in too much quantity causes headache, nausea, vomiting and even death. The toxicity of carbon monoxide is due to

A)  Its greater affinity for haemoglobin as compared to carbon dioxide

B)  Its lower affinity for haemoglobin as compared to carbon dioxide

C)  Its greater affinity for haemoglobin as compared to oxygen

D)  Its greater affinity for oxygen as compared to haemoglobin.