What is the mole fraction of water in 10% by weight (w/w) of aqueous urea solution? [Given: Molar mass of H, O, C and N are 1, 16, 12 and 14 g mol$$^{-1}$$ respectively.]

A

$$0.825$$

B

$$0.032$$

C

$$0.867$$

D

$$0.967$$