If the polynomial $p(x) = x^{3} - 3x^{2} + x + 2$ is divided by the divisor polynomial $s(x)$, then the quotient polynomial $q(x) = x - 2$ and the remainder polynomial $r(x) = -2x + 4$ are obtained. Find the divisor polynomial $s(x)$.

  • A
    $x^{2} - x + 1$
  • B
    $x^{2} + x - 1$
  • C
    $x^{2} + 2x + 7$
  • D
    $x^{3} - x + 8$

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