<p>Two statements are given &ndash; one labelled Assertion (A) and the other labelled Reason (R). Select the correct answer from the codes (A), (B), (C) and (D) as given below :</p>

<p>Assertion (A): All naturally occurring &alpha;-amino acids except glycine are optically active.</p>

<p>Reason (R): Most naturally occurring amino acids have L-configuration.</p>