Let the function \(f\) be defined as \(f(x) = \sqrt { (x - 5)(x + 5) } \). Which of the following could represent the domain of the function \(f\)?
(A)\(x < 5\) (B)\(x > 5\) (C)\(-5 < x < 5\) (D)\(x \geq 5\) or \(x \leq -5\) (E)\(-5 \leq x \leq 5\)
D