For the Given Functions F and G, Find the Composition $f ( x ) = 6 x ^ { 2 } - 2 x ; g ( x ) = - 3 x \quad$

Multiple Choice

For the given functions f and g, find the composition.
- $f ( x ) = 6 x ^ { 2 } - 2 x ; g ( x ) = - 3 x \quad$ Find $( g \circ f ) ( x )$ .

A) $54 x ^ { 2 } - 2 x$
B) $- 18 x ^ { 3 } + 6 x ^ { 2 }$
C) $6 x ^ { 2 } - 4$
D) $- 18 x ^ { 2 } + 6 x$