When $a = -5, b = -6$ and $c = 10$,find the value of $\frac{a^{3} + b^{3} + c^{3} - 3abc}{ab + bc + ca - a^{2} - b^{2} - c^{2}}$.

  • A
    $-1$
  • B
    $1$
  • C
    $2$
  • D
    $-2$

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