Duration: 3:29

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Mark the correct choice as:
(1) If both Assertion (A) and Reason (R) are True and the Reason (R) is a correct explanation of the Assertion (A).
(2) If both Assertion (A) and Reason (R) are True but Reason (R) is not a correct explanation of the Assertion (A).
(3) If Assertion (A) is True but the Reason (R) is False.
(4) If Assertion (A) is False but the Reason (R) is True.
Assertion (A): Smoking makes oxygen less available to the body.

Reason (R): In presence of \( \mathrm{CO}, \mathrm{O}_{2} \) binds less with haemoglobin.
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