The reagment (s) that can selectively precipitate `S^(2-)` from a mixture of `S^(2-)` and `SO_(4)^(2-)` in aqueous solution is (are)

The reagment (s) that can selectively precipitate `S^(2-)` from a mixture of `S^(2-)` and `SO_(4)^(2-)` in aqueous solution is (are)
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The reagment (s) that can selectively precipitate `S^(2-)` from a mixture of `S^(2-)` and `SO_(4)^(2-)` in ... 3))_(2)` D. `Na_(2)[Fe(CN)_(5)NO]`
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