જો $f(x) = \sin^{-1}\left[\frac{2^{x+1}}{1+4^x}\right]$ હોય,તો $f'(0) = $

  • A
    $\log 2$
  • B
    $\frac{4 \log 2}{5}$
  • C
    $2 \log 2$
  • D
    $\frac{2 \log 2}{5}$

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