Given below are two statements: One is labelled as Assertion A and ...

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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:
Reason \( \mathrm{R}: \mathrm{Zn}-\mathrm{Hg} / \mathrm{HCl} \) is used to reduce carbonyl group to \( -\mathrm{CH}_{2}- \) group.
In the light of the above statements, choose the correct answer from the options given below:
(A) Both \( A \) and \( R \) are correct and \( R \) is the correct explanation of \( A \).
(B) Both \( A \) and \( R \) are correct but \( R \) is not the correct explanation of \( A \).
(C) \( A \) is correct but \( R \) is not correct.
(D) \( A \) is not correct but \( \mathrm{R} \) is correct.
(E) Both \( \mathrm{A} \) and \( \mathrm{R} \) are not correct.
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