Find the Equation of the Directrix of the Conic $$r = \frac { 6 } { 3 + \sin \theta }$$

Multiple Choice

Find the equation of the directrix of the conic. Select the correct answer.
$$r = \frac { 6 } { 3 + \sin \theta }$$

A) $x = 2$
B) $y = - 6$
C) $x = 3$
D) $x = - 3$
E) $y = 6$