For the Given Functions F and G, Find the Composition $f ( x ) = x ^ { 3 } - 4 x ; g ( x ) = 2 x \quad$

Multiple Choice

For the given functions f and g, find the composition.
- $f ( x ) = x ^ { 3 } - 4 x ; g ( x ) = 2 x \quad$ Find $( f \circ g ) ( x )$ .

A) $8 x ^ { 3 } - 8 x$
B) $8 x ^ { 2 } - 8 x$
C) $2 x ^ { 3 } - 8 x$
D) $2 x ^ { 3 } - 4 x$