An aqueous solution of 2% non-volatile solute exerts a pressure of 1.004 bar at the normal boiling point of the solvent. What is the molar mass of the solute?

Question

$\begin{array}{1 1}41.35gmol^{-1}\\31.35gmol^{-1}\\21.35gmol^{-1}\\61.35gmol^{-1}\end{array} $