$\lim _{n}$ ${\rightarrow \infty} \sqrt{2} \left[ \frac{(2+\sqrt{2})^n + (2-\sqrt{2})^n}{(2+\sqrt{2})^n - (2-\sqrt{2})^n} \right] =$

  • A
    $2-\sqrt{2}$
  • B
    $2+\sqrt{2}$
  • C
    $1$
  • D
    $\sqrt{2}$

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