Which one of the following is an example of disproportionation reaction?

Options

A. `Zn_((s))+CuSO_(4(aq)) to ZnSO_(4(aq))+Cu_((s))`
B. `Ag^(2+) (aq)+Ag_((s)) to SO_(2(g))`
C. `S_((s))+O_(2(g)) to SO_(2(g))`
D. `P_(4(s))+3OH^(-) (aq)+3H_(2)O to PH_(3(g))+3H_(2)PO_(2)^(-) (aq)`

Answer

D