A `5.25%` solution of a substance is isotonic with a `1.5%` solution of urea (molar mass `= 60g mol^(-1)`) in the same solvent. If the densities of both the solutions are assumed to be equal to `1.0 g cm^(-3)`, molar mass of the substance will be:

Options

A. `"105.0 g mol"^(-1)`
B. `"210.0 g mol"^(-1)`
C. `"90.0 g mol"^(-1)`
D. `"15.0 g mol"^(-1)`

Answer

B