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Find all possible solutions to the following polynomial equation:

$$ 2x^3 - 10x^2 + 8x - 40 = 0$$

A

$x = 10$
$x = -2$

B

$x = \pm4i$
$x = -5$

C

$x = -2$
$x = 5$

D

$x = 5$
$x = \pm2i$

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