If $A$ and $B$ are the coefficients of ${x^n}$ in the expansions of ${(1 + x)^{2n}}$ and ${(1 + x)^{2n - 1}}$ respectively, then

  • A

    $A = B$

  • B

    $A = 2B$

  • C

    $2A = B$

  • D

    None of these

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