The middle term in the expansion of ${\left( {x + \frac{1}{{2x}}} \right)^{2n}}$, is

  • A

    $\frac{{1.3.5....(2n - 3)}}{{n!}}$

  • B

    $\frac{{1.3.5....(2n - 1)}}{{n!}}$

  • C

    $\frac{{1.3.5....(2n + 1)}}{{n!}}$

  • D

    None of these

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