Find the Vertex,focus,and Directrix of the Parabola $y ^ { 2 } = - 3 x$

Multiple Choice

Find the vertex,focus,and directrix of the parabola.​ $y ^ { 2 } = - 3 x$ ​

A) Vertex: (0,0) ;Focus: $\left( - \frac { 3 } { 4 } , 0 \right)$ ;Directrix: $x = - \frac { 3 } { 4 }$
B) Vertex: (0,0) ;Focus: $\left( - \frac { 1 } { 3 } , 0 \right)$ ;Directrix: $x = \frac { 1 } { 3 }$
C) Vertex: (0,0) ;Focus: $\left( \frac { 1 } { 3 } , 0 \right)$ ;Directrix: $x = \frac { 1 } { 3 }$
D) Vertex: (0,0) ;Focus: $\left( \frac { 3 } { 4 } , 0 \right)$ ;Directrix: $x = - \frac { 3 } { 4 }$
E) Vertex: (0,0) ;Focus: $\left( - \frac { 3 } { 4 } , 0 \right)$ ;Directrix: $x = \frac { 3 } { 4 }$