Find the Derivative of the Function at the Given Value $$f ( x ) = x ^ { 3 } + 4 x ; x = - 2$$

Find the derivative of the function at the given value of x.
- $$f ( x ) = x ^ { 3 } + 4 x ; x = - 2$$

A) $- 2$
B) 4
C) 16
D) 12