Consider the following two reactions: \[ \begin{array}{l} \mathrm{Cd}^{2+} \text { (aq.) }+2 \ma...

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Consider the following two reactions:
\[
\begin{array}{l}
\mathrm{Cd}^{2+} \text { (aq.) }+2 \mathrm{H}_{2} \mathrm{NCH}_{2} \mathrm{CH}_{2} \mathrm{NH}_{2} \stackrel{\mathrm{K}_{1}}{\longrightarrow} A \\
\mathrm{Cd}^{2+}(\text { aq. })+2 \mathrm{CH}_{3} \mathrm{CH}\left(\mathrm{NH}_{2}\right) \mathrm{CH}\left(\mathrm{NH}_{2}\right) \mathrm{CH}_{3} \stackrel{\mathrm{K}_{2}}{\longrightarrow} B
\end{array}
\]
D.
According to given information the correct statement is are :
(a) \( A \) is optically active while \( B \) is optically inactive.
(b) \( A \) is optically inactive while \( B \) is optically active.
(c) both are optically inactive.
(d) both are optically active.
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