On passing `H_2S` through acidified `FeCl_3` solution `FeCl_3` is converted into
On passing `H_2S` through acidified `FeCl_3` solution `FeCl_3` is converted into
A. `Fe(SO_4)_3`
B. `FeS`
C. `FeCl_2`
D. `FeSO_4`
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