Given that $E^{\large\circ}$ values of $Ag^+|Ag,K^+|K,Mg^{2+}|Mg$ and $Cr^{3+}|Cr$ are 0.80V,-2.93V,-2.37V,and -0.74V,respectively.Which of the following orders regarding the reducing power of metals is correct?

Question

$\begin{array}{1 1}Ag > Cr > Mg > K\\Ag < Cr < Mg < K\\Ag > Cr > K > Mg\\Cr > Ag > Mg > K\end{array} $