The vapour pressure of water at $20^oC$ is 17.5 mm Hg. If 18 g of glucose $(C_6H_{12}O_6)$ is added to 178.2 g of water at $20^oC$, the vapour pressure of the resulting solution will be

Question

( A ) 17.675 mm Hg
( B ) 16.500 mm Hg
( C ) 17.325 mm Hg
( D ) 15.750 mm Hg