Which of the following equations repreaents the oxidising action of sulphar dioxide.
A. `2Fe^(3+)+SO_(2)+2H_(2)Orarr2Fe^(2+)+SO_(4)^(2-)+4H^(+)`
B. `3Fe+SO_(2)rarr2FeO+FeS`
C. `2MnO_(4)^(-)+2H_(2)O+5SO_(2)rarr2Mn^(2+)+4H^(+)+5SO_(2)^(2+)`
D. `Cr_(2)O_(7)^(2-)+2H^(+)+3SO_(2)rarr2C_(r)^(3+)3SO_(4)^(2-)+H_(2)O`
