If $g(x)$ is the inverse function of $f(x)$ and $f^{\prime}(x) = \frac{1}{1+x^4}$,then $g^{\prime}(x)$ is

  • A
    $1+[g(x)]^4$
  • B
    $1-[g(x)]^4$
  • C
    $1+[f(x)]^4$
  • D
    $\frac{1}{1+[g(x)]^4}$

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