Find the Domain and Range for the Indicated Function $f ( x ) = \sqrt { x } , g ( x ) = \frac { x } { 3 }$

Multiple Choice

Find the domain and range for the indicated function.
-If $f ( x ) = \sqrt { x } , g ( x ) = \frac { x } { 3 }$ , and $h ( x ) = 3 x + 9$ , find $f ( g ( h ( x ) ) )$

A) $\sqrt { x + 9 }$
B) $\sqrt { x + 3 }$
C) $\sqrt { x } + 3$
D) $3 \sqrt { x } + 9$