Approximate water solubilities at25°C are supplied in g per100g water: CaSO₄=0.21, SrSO₄=0.013, BaSO₄=0.00025; KCl=35, KBr=68, KI=148. Select the increasing orders consistent with these data.

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Arrange each supplied numerical set from smaller to larger. The sulfate sequence is 0.00025<0.013<0.21; the potassium halide sequence is 35<68<148. Thus A and C are correct. Solubility is not inferred from size alone when explicit data are supplied.

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