What is the largest possible real domain of the function \(h(x)=\ln(x^{2}-\) [h of x equals the natural log of the quantity x squared minus 9]?

W) \((-\infty,\infty)\)

X) \((-\infty,-\cup(3,\infty)\) [the open interval from negative infinity to negative 3 union the open interval from 3 to positive infinity]

Y) \((-3,\)

Z) \((3,\infty)\)
X) \((-\infty,-3)\cup(3,\infty)\)