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Compute the limit of:

$$\lim _{ x\xrightarrow { } 4 }{ \cfrac { 2{ x }^{ 2 }-4x-2 }{ { x }^{ 2 }-4 } } $$

A

$1$

B

$\cfrac{7}{6}$

C

$2$

D

$\cfrac{6}{7}$

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