$\tan \left(\cos ^{-1}\left(\frac{4}{5}\right)+\tan ^{-1}\left(\frac{2}{3}\right)\right) = $

  • A
    $\frac{17}{6}$
  • B
    $\frac{17}{3}$
  • C
    $\frac{18}{5}$
  • D
    $\frac{7}{15}$

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