A teacher one day pointed out to his students the peculiar fact that water is a unique liquid which freezes exactly at `0^(@)C`.and boils exactly at `100^(@)C`. He asked the students to find the correct statement based on this fact.
A. water dissolves anything however sparingly the dissolution may be
B. water is a polar molecule
C. boiling and freezing temperatures of water were used to define a temperature scale
D. liquid water is denser than ice
