Find the Equation of the Parabola with Vertex at (0 $\quad y ^ { 2 } = 12 x$

Multiple Choice

Find the equation of the parabola with vertex at (0, 0) and focus at (0, 3) .

A) $\quad y ^ { 2 } = 12 x$
B) $\quad x ^ { 2 } = y + 3$
C) $\quad x ^ { 2 } = 3 y$
D) $\quad x ^ { 2 } = 12 y$
E) none of these