If $y = \sin^{-1}\sqrt{1 - x} + \cos^{-1}\sqrt{x}$,then $\frac{dy}{dx} = $

  • A
    $\frac{1}{\sqrt{x(1 - x)}}$
  • B
    $-\frac{1}{\sqrt{x(1 - x)}}$
  • C
    $\frac{1}{\sqrt{x(1 + x)}}$
  • D
    None of these

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