When a substance is dissolved in a solvent,the vapour pressure of the solvent is decreased.This result in

Question

$\begin{array}{1 1}(a)\;\text{the solution having a lower osmotic pressure than the solvent}\\(b)\;\text{the solution having a lower freezing point than the solvent}\\(c)\;\text{an increase in boiling point of the solution}\\(d)\;\text{Both (b) and (c)}\end{array}$