Find an Equation of the Parabola Described $y=20 x^{2}$

Find an equation of the parabola described.
-Focus at (5, 0) ; vertex at (0, 0)

A) $y=20 x^{2}$
B) $x=20 y^{2}$
C) $x^{2}=20 y$
D) $y^{2}=20 x$