If $x^2 + px + 1$ is a factor of $ax^3 + bx + c$,then

  • A
    $a^2 + c^2 = ab + 3$
  • B
    $a^2 - c^2 = ab$
  • C
    $a^2 - c^2 = -ab$
  • D
    $a^2 + c^2 = ab$

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