Find the Coordinates of the Vertex of the Quadratic Function $$f ( x ) = - 4 x ^ { 2 } - 8 x - 9$$

Multiple Choice

Find the coordinates of the vertex of the quadratic function.
- $$f ( x ) = - 4 x ^ { 2 } - 8 x - 9$$

A) $( 1 , - 21 )$
B) $( 2 , - 41 )$
C) $( - 2 , - 17 )$
D) $( - 1 , - 5 )$