Which of the following is(are) true when $HCl(g)$ is passed through water?
$(i)$ It does not ionise in the solution as it is a covalent compound.
$(ii)$ It ionises in the solution.
$(iii)$ It gives both hydrogen and hydroxyl ion in the solution.
$(iv)$ It forms hydronium ion in the solution due to the combination of hydrogen ion with water molecule.

• A
  $(i)$ only
• B
  $(iii)$ only
• C
  $(ii)$ and $(iv)$
• D
  $(iii)$ and $(iv)$