$\operatorname{sech}^2\left(\tanh ^{-1} \frac{1}{2}\right)+\operatorname{cosech}^2\left(\operatorname{coth}^{-1} 3\right)=$

  • A
    $\frac{35}{9}$
  • B
    $\frac{3}{2}$
  • C
    $\frac{25}{4}$
  • D
    $\frac{35}{4}$

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