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Find all rational zeros of the following function, $f(x)$:

$$f(x) = x^{4} - x^{3} + x^{2} - 3x - 6$$

A

${-1, 2, \pm {3i}}$

B

${-1, -2, \pm{3i}}$

C

${1, 2, \pm{3i}}$

D

$1, -2, \pm{3i}$

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