The solubility of common salt is `36.0` g in 100 g of water at `20^(@)` C . If systems I , II and III contains `20.0 , 18.0 "and" 15.0` of the salt added to `50.0` g of water in each case , the vapour pressures would be in the order :

Options

A. IltIIltIII
B. IgtIIgtIII
C. I=II gt III
D. I=II ltIII

Answer

D

Explanation

Solution will cases I and II are saturated and that in III is unsaturated.