For $x^2-4 \neq 0$,the value of $\frac{d}{d x}\left[\log \left\{e^x\left(\frac{x-2}{x+2}\right)^{\frac{3}{4}}\right\}\right]$ at $x=3$ is

  • A
    $\frac{8}{5}$
  • B
    $2$
  • C
    $1$
  • D
    $\frac{8 e^3}{5}$

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