Which of the following are isoelectronic species?

  • A
    $O^{2-}, F^{-}, Na^{+}, Mg^{+}$
  • B
    $O, F^{-}, Na, Mg$
  • C
    $O^{2-}, F^{-}, Na^{+}, Mg^{2+}$
  • D
    $O^{2-}, Cl^{-}, Na, Mg^{2+}$

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