If $\alpha, \beta, \gamma$ are the cube roots of $p$ $(p < 0)$,then for any $x, y$ and $z$,$\frac{x\alpha + y\beta + z\gamma}{x\beta + y\gamma + z\alpha} = $

  • A
    $\frac{1}{2}(-1 + i\sqrt{3})$
  • B
    $\frac{1}{2}(1 + i\sqrt{3})$
  • C
    $\frac{1}{2}(1 - i\sqrt{3})$
  • D
    None of these

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