The graph of the function y = f(x) is symmetrical about the line x = 2, then

Question

$f\left( x \right) = - f\left( { - x} \right)$

$f\left( {2 + x} \right) = f\left( {2 - x} \right)$

$f\left( x \right) = f\left( { - x} \right)$

$f\left( {x + 2} \right) = f\left( {x - 2} \right)$

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