The domain of the function $f(x) = \sqrt{x - x^2} + \sqrt{4 + x} + \sqrt{4 - x}$ is

  • A
    $[-4, \infty)$
  • B
    $[-4, 4]$
  • C
    $[0, 4]$
  • D
    $[0, 1]$

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