A \( Mg^{2+} < Ca^{2+} < Sr^{2+} \)
B \( Mg^{2+} > Ca^{2+} > Sr^{2+} \)
C \( S^{2-} > Cl^{-} > K^{+} \)
D \( Au^{+} > Au^{3+} > Cu^{+} \)
Correct Answer: Option B
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