If $y = \sin(2 \sin^{-1} x)$, then $\frac{dy}{dx} = \dots$

  • A
    $\frac{2 - 4x^2}{\sqrt{1 - x^2}}$
  • B
    $\frac{2 + 4x^2}{\sqrt{1 - x^2}}$
  • C
    $\frac{2 - 4x^2}{\sqrt{1 + x^2}}$
  • D
    $\frac{2 + 4x^2}{\sqrt{1 + x^2}}$

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