The boiling point of a pure liquid is 353.23 K. When 1.80 g of a non-volatile solute is dissolved in 90 g of this pure liquid, the boiling point becomes 354.11 K. The molar mass of the solute is (given that the boiling point elevation constant function of the pure liquid is 2.53 K. kg. `mol^-1`)

Options

A. `1.7 g.mol^-1`
B. `25 g.mol^-1`
C. `5.4 g.mol^-1`
D. `58 g.mol^-1`