\(\mathrm{CrO}_{7}^{2-}+14 \mathrm{H}^{+}+6 \mathrm{I} \rightarrow 2 \mathrm{Cr}^{3+}+\) \(3 \mathrm{I}_{2}+7 \mathrm{H}_{2} \mathrm{O}\) 12. The solubility of a salt of molar mass \(100 \mathrm{~g}\) at \(20^{\circ} \mathrm{C}\) is \(0.34 \mathrm{~mol} / \mathrm{dm}^{3}\). If \(3.4 \mathrm{~g}\) of that salt dissolved completely in \(250 \mathrm{~cm}^{3}\) of water at that temperature, the resulting solution is ____________
A. A suspension B. Saturated C. Unsaturated D. Supersaturated