Given below are two statements. One of them is labelled as Assertion (A} and the other as Reason (R}. Choose the correct answer with the help of code given below :
Assertion (A} : Never sleep in a room with burning or smouldering coal fire in it. Reason (R} : Incomplete combustion leads to production of Carbon Monoxide gas, which may lead to death of people sleeping in the room.

Correct option is A

The correct answer is (a).
Explanation
Sleeping in a room with burning or smouldering coal is extremely dangerous because coal often undergoes incomplete combustion. Incomplete combustion produces carbon monoxide gas, which is colourless, odourless, and highly poisonous. When inhaled, carbon monoxide binds with haemoglobin and reduces the oxygen-carrying capacity of blood, which can lead to suffocation and death. Therefore, the reason correctly explains the assertion.
Additional Information
• Option {b} is incorrect because the reason directly explains the assertion. • Option {c} is incorrect because the reason is scientifically correct. • Option {d} is incorrect because the assertion is also true and based on safety principles.