If standard reduction potentials $(E^0)$ of $(Al^{+3}_{(aq)}|Al(s))$, $(Fe^{+2}_{(aq)}|Fe(s))$, $(Cu^{+2}_{(aq)}|Cu(s))$ and $(Ag^{+1}_{(aq)}|Ag(s))$ are $-1.66 \text{ V}$, $-0.44 \text{ V}$, $+0.34 \text{ V}$ and $+0.79 \text{ V}$ respectively, which of the following reactions is non-spontaneous?

  • A
    $2Ag(s) + Fe^{+2}_{(aq)} \rightarrow 2Ag^{+1}_{(aq)} + Fe(s)$
  • B
    $2Al(s) + 3Cu^{+2}_{(aq)} \rightarrow 2Al^{+3}_{(aq)} + 3Cu(s)$
  • C
    $Fe(s) + Cu^{+2}_{(aq)} \rightarrow Fe^{+2}_{(aq)} + Cu(s)$
  • D
    $2Al(s) + 3Fe^{+2}_{(aq)} \rightarrow 2Al^{+3}_{(aq)} + 3Fe(s)$

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