Find the Coordinates of the Vertex for the Parabola Defined $$f ( x ) = - x ^ { 2 } + 8 x - 4$$

Multiple Choice

Find the coordinates of the vertex for the parabola defined by the given quadratic function.
- $$f ( x ) = - x ^ { 2 } + 8 x - 4$$

A) $( 4,12 )$
B) $( 8 , - 4 )$
C) $( - 4 , - 20 )$
D) $( - 4 , - 52 )$