If $f(x) = \log_{5} \log_{3} x$, then $f^{\prime}(e)$ is equal to

  • A
    $e \log_{e} 5$
  • B
    $e \log_{4} 3$
  • C
    $\frac{1}{e \log_{e} 5}$
  • D
    $\frac{1}{e \log_{e} 3}$

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