$\frac{{^nC_0}}{1} + \frac{{^nC_2}}{3} + \frac{{^nC_4}}{5} + \frac{{^nC_6}}{7} + \dots = $

  • A
    $\frac{{2^{n+1}}}{n+1}$
  • B
    $\frac{{2^{n+1}-1}}{n+1}$
  • C
    $\frac{{2^n}}{n+1}$
  • D
    $\text{इनमें से कोई नहीं}$

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