$\lim _{n}$ ${\rightarrow \infty}\left[\left(1+\frac{1}{n^2}\right)\left(1+\frac{2^2}{n^2}\right) \ldots\left(1+\frac{n^2}{n^2}\right)\right]^{\frac{1}{n}}=$

  • A
    $3 e^{\frac{\pi-4}{6}}$
  • B
    $2 e^{\frac{\pi-2}{4}}$
  • C
    $2 e^{\frac{\pi-4}{2}}$
  • D
    $4 e^{\frac{\pi-4}{4}}$

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