Which of the following is the correct sequence of the noble gases in their group in the periodic table?

• A
  $Ar, He, Kr, Ne, Rn, Xe$
• B
  $He, Ar, Ne, Kr, Xe, Rn$
• C
  $He, Ne, Ar, Kr, Xe, Rn$
• D
  $He, Ne, Kr, Ar, Xe, Rn$