The vapour pressure of water at 20 is 17.5 mm Hg. If 18 g of glucose C₆H₁₂O₆ is added to 178.2 g water 20 , the vapour pressure of the resulting solution will be:
A. 17.675 mm Hg
B. 15.750 mm Hg
C. 16.500 mm Hg
D. 17.325 mm Hg