Find the Equation of the Axis of Symmetry of the Parabola

Multiple Choice

Find the equation of the axis of symmetry of the parabola.
- $$f ( x ) = ( x + 9 ) ^ { 2 } - 2$$

A) $y = 2$
B) $x = 2$
C) $x = 9$
D) $x = - 9$