Find the Vertex of the Parabola $$f ( x ) = x ^ { 2 } + 16 x - 8$$

Find the vertex of the parabola.
- $$f ( x ) = x ^ { 2 } + 16 x - 8$$

A) $\left( - 8 , \frac { 11 } { 4 } \right)$
B) $( 16 , - 8 )$
C) $( - 8 , - 72 )$
D) $( - 16,8 )$