Which Solution Will Have the Lowest Boiling Point

Multiple Choice

Which solution will have the lowest boiling point?

A) 0.050 M KNO₃
B) 0.075 M CaCl₂
C) 0.025 M NH₄NO₃
D) 0.020 M Na₃PO₄
E) 0.10 M C₆H₁₂O₆