Which of the following statements are correct?
I. We can see clearly through a glass.
II. Evaporation can be used for the separation of soluble solids from liquids.
III. Threshing can be used to separate lighter husk particles from heavier seeds of grains.
IV. A solution which has more than the maximum amount of solute that can be dissolved in it is called unsaturated solution.
AI and III
BI and II
CII and IV
DIII and IV