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When a man inhales air containing normal...

When a man inhales air containing normal concentration of `O_(2)` as well as CO he suffers from suffocation because

A

Haemoglobin combines with co instead of with `O_(2)` and product cannot dissociate

B

co reacts with `O_(2)` reducing percentage of `O_(2)` in the blood

C

CO affecrts the diapharagma and intercostal muscles

D

CO affects the nerve of the lungs

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The correct Answer is:
A
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  12. The impulse for voluntary muscles for forced breathing starts in

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