Write a Polar Equation of a Conic That Has Its $y = - 3$

Multiple Choice

Write a polar equation of a conic that has its focus at the origin and satisfies the given conditions.Parabola, directrix $y = - 3$

A) $r = \frac { 3 } { 1 - \sin \theta }$
B) $r= \frac { 3 } { 1 + \sin \theta }$
C) $r= \frac { 1 } { 1 - 3 \cos \theta }$
D) $r = \frac { 3 } { 1 + 3 \cos \theta }$
E) none of these