Write the Standard Form of the Equation of the Parabola $y ^ { 2 } = 8 y$

Multiple Choice

Write the standard form of the equation of the parabola with focus (0,-2) and its vertex at the origin.

A) $y ^ { 2 } = 8 y$
B) $x ^ { 2 } = 8 x$
C) $y ^ { 2 } = - 8 x$
D) $x ^ { 2 } = - 8 y$
E) $x ^ { 2 } = \frac { 1 } { 8 } y$