In each of four separate beakers (I, II, III, IV), X mL of \(y \mathrm{M} \mathrm{Fe}_2 \mathrm{O}_3 x \mathrm{H}_2 \mathrm{O}\) colloidal solution is present. Equal volume and equal concentration of of KCl, \(\mathrm{K}_4\left[\mathrm{Fe}(\mathrm{CN})_6\right], \mathrm{K}_3 \mathrm{PO}_4\) and \(\mathrm{K}_2 \mathrm{SO}_4\) was added into I, II, III and IV respectively. The efficiency of precipitations in these beakers follows the order

1. A \(\mathrm{II}>\mathrm{III}>\mathrm{IV}>\mathrm{I}\)
2. B \(\mathrm{II}>\mathrm{III}>\mathrm{I}>\mathrm{IV}\)
3. C \(\mathrm{I}>\mathrm{IV}>\mathrm{III}>\mathrm{II}\)
4. D \(\text { III }>\text { IV }>\text { I }>\text { II }\)