Exposure to carbon monoxide ( from coal gas ) is extremely dangerous and can kill a patient because

Options

A. The compound carboxy-hemoglobin is formed with hemoglobin which can gradually clot the blood resulting in circulatory failure.
B. Caboxy-hemoglobin reduces the ability of blood to transport oxygen by rupturing a vast majority of erythrocyte.
C. Carboxy-hemoglobin greatly modifies the structure of hemoglobin, thus making it lose its affinity for oxygen.
D. The compound formed, carboxy-hemoglobin does not allow RBCs to act for their respiratory function.

Answer

D