Noble gases — practice question

Helium and xenon are both noble gases. Which statement is correct for both elements?

• AThey are chemically inert; the atoms have eight electrons in their outer shell.
• BThey are chemically inert; the atoms do not have eight electrons in their outer shell.
• CThey are not chemically inert; the atoms have eight electrons in their outer shell.
• DThey are not chemically inert; the atoms do not have eight electrons in their outer shell.