Among the following,the set of isoelectronic ions is:
- A$Na^{+}, Mg^{2+}, F^{-}, Cl^{-}$
- B$Na^{+}, Ca^{2+}, F^{-}, O^{-}$
- C$Na^{+}, Mg^{2+}, F^{-}, O^{2-}$
- D$Na^{+}, K^{+}, S^{2-}, Cl^{-}$
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