For the Given Functions F and G , Find the Indicated

Multiple Choice

For the given functions f and g , find the indicated composition.
- $$f ( x ) = - 3 x + 6 , \quad g ( x ) = 5 x + 5$$
$( g \circ f ) ( x )$

A) $- 15 x + 21$
B) $- 15 x - 25$
C) $- 15 x + 35$
D) $15 x + 35$