Find a Polar Equation in R And $\theta$ That Has the Same Graph as the Equation in X

Multiple Choice

Find a polar equation in r and $\theta$ that has the same graph as the equation in x and y. $x = - 6$

A) $r = - 6 \sin \theta$
B) $r = - 6 \sec \theta$
C) $r = - 6$
D) $r = - 6 \cos \theta$
E) $r = 6 \csc \theta$