Find the Standard Form of the Equation of the Parabola $\frac { 1 } { 2 }$

Multiple Choice

Find the standard form of the equation of the parabola with the given characteristic(s) and vertex at the origin. ​
Focus: (0, $\frac { 1 } { 2 }$ )
​

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