In which of the following conditions,the distance between the molecules of hydrogen gas would increase?
$(i)$ Increasing pressure on hydrogen contained in a closed container
$(ii)$ Some hydrogen gas leaking out of the container
$(iii)$ Increasing the volume of the container of hydrogen gas
$(iv)$ Adding more hydrogen gas to the container without increasing the volume of the container

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