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Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A) : An aqueous solution of KOH when used for volumetric analysis, its concentration should be checked before the use.
Reason (R) : On aging, \( \mathrm{KOH} \) solution absorbs atmospheric \( \mathrm{CO}_{2} \).
(a) If both assertion and reason are true and reason is the correct explanation of assertion.
(b) If both assertion and reason are true but reason is not the correct explanation of assertion.
(c) If assertion is true but reason is false.
(d) If both assertion and reason are false.
\( \mathrm{P} \)
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