If $\alpha, \beta$ and $\gamma$ are the roots of $x^3 + 8 = 0$,then the equation whose roots are $\alpha^2, \beta^2$ and $\gamma^2$ is

  • A
    $x^3 - 8 = 0$
  • B
    $x^3 - 16 = 0$
  • C
    $x^3 + 64 = 0$
  • D
    $x^3 - 64 = 0$

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