The correct option is B f (2 + x) =f (2 - x)
As the graph of f is symmetrical about x=2,the graph of f to the left of x=2 is same as the graph of f to the right of x=2.⇒If (2−x, y) is a point on the graph, then (2+x, y) is also a point on the graph.⇒The functional value at (2−x) is same as that of functional value at (2+x) .⇒f(2 + x) = f(2 − x)