Write an equation of a parabola with the vertex at the origin and the given directrix.

directrix xequalsminus4
Question content area bottom
Part 1
Choose the correct answer below.
A.x equals one sixteenth y squared
x equals one sixteenth y squared
B.y equals one sixteenth x squared
y equals one sixteenth x squared
C.x equals negative one sixteenth y squared
x equals negative one sixteenth y squared
D.x equals one fourth y squared
x equals one fourth y squared

B. y = 1/16 x^2