Determine the Values of X for Which F(x) and G(x) $$f ( x ) = ( x - 13 ) ^ { 2 } + 4 , g ( x ) = \sqrt { x - 4 } + 13$$

Multiple Choice

Determine the values of x for which f(x) and g(x) are inverse functions.
- $$f ( x ) = ( x - 13 ) ^ { 2 } + 4 , g ( x ) = \sqrt { x - 4 } + 13$$

A) $x \geq 0$
B) $x \geq 13$
C) $x \leq 0$
D) $x \geq 4$