Find $( f \circ g ) ( x )$ Where $f ( x ) = 2 x + 6$

Multiple Choice

Find $( f \circ g ) ( x )$ where $f ( x ) = 2 x + 6$ and $g ( x ) = x ^ { 2 } - 2$ .

A) $2 x ^ { 3 } 12 x ^ { 2 } - 4 x - 12$
B) $2 x ^ { 2 } + 2$
C) $4 x ^ { 2 } + 24 x + 34$
D) $4 x ^ { 2 } + 4$
E) $2 x ^ { 2 } + 4$