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If the graph of the function y = f(x) is...

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

A

`f(x+2)= f(x-2)`

B

`f(2+x)= f(2-x)`

C

`f(x)= f(-x)`

D

`f(x)= -f(-x)`

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