Find the Standard Form of the Equation of the Parabola $\left( - \frac { 7 } { 2 } , 0 \right)$

Multiple Choice

Find the standard form of the equation of the parabola with the given characteristic(s) and vertex at the origin. ​
Focus: $\left( - \frac { 7 } { 2 } , 0 \right)$ ​

A) $x ^ { 2 } = 14 y$
B) $y ^ { 2 } = - 14 x$
C) $y ^ { 2 } = 14 x$
D) $x ^ { 2 } = - 14 y$
E) $y ^ { 2 } = - \frac { x } { 14 }$