If $y = \log(\log x)$,then $\frac{d^2y}{dx^2}$ is equal to

  • A
    $-\frac{(1+\log x)}{(x \log x)^2}$
  • B
    $-\frac{(1+\log x)}{x^2 \log x}$
  • C
    $\frac{(1+\log x)}{(x \log x)^2}$
  • D
    $\frac{(1+\log x)}{x^2 \log x}$

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