Find the Vertex, Focus, Directrix, and Focal Width of the Parabola

Multiple Choice

Find the vertex, focus, directrix, and focal width of the parabola.
- $$y ^ { 2 } = - 12 x$$

A) Vertex: $( 0,0 )$ ; Focus: $( 3,0 )$ ; Directrix: $x = - 3$ ; Focal width: 3
B) Vertex: $( 0,0 )$ ; Focus: $( - 3,0 )$ ; Directrix: $y = 3$ ; Focal wid th: 48
C) Vertex: $( 0,0 )$ ; Focus: $( 0 , - 3 )$ ; Directrix: $y = 3$ ; Focal width: 48
D) Vertex: $( 0,0 )$ ; Focus: $( - 3,0 )$ ; Directrix: $x = 3$ ; Focal width: 12