Find the equation of the parabola with its focus at (3,4) and its directrix y = 0.
A) y= -1/3(x - 2)2 + 3
B) y = -1/3(x - 3)2 + 2
OC) y = 1/3(x - 3)2 - 2
OD) y = 1/g(x - 3)2 + 2