Let $\mathrm{n}$ be an odd natural number such that the variance of $1,2,3,4, \ldots, \mathrm{n}$ is $14 .$ Then $\mathrm{n}$ is equal to ..... .

  • [JEE MAIN 2021]
  • A

    $12$

  • B

    $13$

  • C

    $23$

  • D

    $26$

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