(A) (colourless solution ) gives white ppt (B) with `NaOH` solution but ppt dissolves in excess of `NaOH` forming (C ) (C ) does not give ppt with `H_(2)S` but on boiling with `NH_(4)CI` while ppt (B) appears (A) also gives yellow ppt with `AgNO_(3)` identify (A),(B) and (C )