Which one of the following statements is false?

Raoult's law states that the vapour pressure of a component over a solution is proportional to its mole fraction.

The osmotic pressure ($\mathrm{\Pi }$) of a solution is given by the equation $\mathrm{\Pi }=\mathrm{MRT}$ where M is the molarity of the solution.

The correct order of osmotic pressure for 0.01 M aqueous solution of each compound is ${\mathrm{BaCl}}_2>\mathrm{KCl}>{\mathrm{CH}}_3\mathrm{COOH}>$sucrose.

Two sucrose solutions of same molality prepared in different solvents will have the same freezing point depression.