If $\alpha$ and $\beta$ are roots of the equation $Ax^2 + Bx + C = 0$,then the value of $\alpha^3 + \beta^3$ is

  • A
    $\frac{3ABC - B^3}{A^3}$
  • B
    $\frac{3ABC + B^3}{A^3}$
  • C
    $\frac{B^3 - 3ABC}{A^3}$
  • D
    $\frac{B^3 - 3ABC}{B^3}$

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