(1) If both Assertion (A) and Reason (R) are True and the Reason (R) is a correct explanation of...

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(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) Assertion (A) is False but Reason (R) is True.
Assertion (A): The packing efficiency is maximum for the fcc structure.

Reason (R): The coordination number is 12 in fcc structures.
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