Water (boiling point $100^\circ C$) and $HCl$ (boiling point $85^\circ C$) form an azeotropic mixture at $108.5^\circ C$. What is obtained when this mixture is distilled?

• A
  Pure $HCl$
• B
  Pure water
• C
  Pure water and $HCl$
• D
  Neither $HCl$ nor $H_2O$ in pure state