The standard electrode potential $(E^{\circ})$ values of $Al^{3+}/Al, Ag^{+}/Ag, K^{+}/K$ and $Cr^{3+}/Cr$ are $-1.66 \ V, 0.80 \ V, -2.93 \ V$ and $-0.74 \ V,$ respectively. The correct decreasing order of reducing power of the metal is:
- A$Ag > Cr > Al > K$
- B$K > Al > Cr > Ag$
- C$K > Al > Ag > Cr$
- D$Al > K > Ag > Cr$
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