$\cosh \left(\sinh ^{-1}(\sqrt{8})+\cosh ^{-1} 5\right)=$

  • A
    $\sqrt{6}+4 \sqrt{2}$
  • B
    $15+8 \sqrt{3}$
  • C
    $6 \sqrt{6}+10 \sqrt{2}$
  • D
    $8-15 \sqrt{3}$

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