Choose the Aqueous Solution Below with the Lowest Freezing Point

Multiple Choice

Choose the aqueous solution below with the lowest freezing point. These are all solutions of nonvolatile solutes and you should assume ideal van't Hoff factors where applicable.

A) 0.075 mol kg^-1 NaI
B) 0.075 mol kg^-1 (NH₄) ₃PO₄
C) 0.075 mol kg^-1 NaBrO₄
D) 0.075 mol kg^-1 LiCN
E) 0.075 mol kg^-1 KNO₂