જો $\alpha = \log_e(2+\sqrt{3})$ હોય,તો $\frac{\cosh \alpha}{1-\tanh \alpha} + \frac{\sinh \alpha}{1-\coth \alpha} = $

  • A
    $4+2\sqrt{3}$
  • B
    $7+4\sqrt{3}$
  • C
    $\frac{\sqrt{3}+1}{2}$
  • D
    $2+\sqrt{3}$

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