Which aqueous solution has the highest boiling point, assuming all solutions are ideal and have the same concentration of solute particles (same molality of dissolved solute units)?

• A. $1.0m$ sodium chloride ($NaCl$)
• B. $1.0m$ potassium sulfate ($K_{2}S{O}_4$)
• C. $1.0m$ glucose ($C_6{H}_{12}{O}_6$, non-electrolyte)
• D. $1.0m$ calcium chloride ($CaC{l}_2$)

Answer: (D)