Evaluate the Indicated Function For $f ( x ) = x ^ { 2 } - 1$

Multiple Choice

Evaluate the indicated function for $f ( x ) = x ^ { 2 } - 1$ and $g ( x ) = x - 6$ .
$( f g ) ( - 2 )$

A) $- 24$
B) 40
C) $- 2$
D) 12
E) 24