For the Given Functions F and G , Find the Indicated

Multiple Choice

For the given functions f and g , find the indicated composition.
- $$\begin{array} { l } f ( x ) = \frac { x - 8 } { 3 } , \quad g ( x ) = 3 x + 8 \\( g f ) ( x ) \end{array}$$

A) $x - \frac { 8 } { 3 }$
B) $x + 16$
C) $x$
D) $3 x + 16$