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

Multiple Choice

Find the standard form of the equation of the parabola with the given characteristic(s) and vertex at the origin.
Passes through the point (2,4) ; horizontal axis

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