The Polar Equation That Corresponds to the Rectangular Equation $x = - 2$

Multiple Choice

The polar equation that corresponds to the rectangular equation $x = - 2$ is

A) $\theta = \frac { \pi } { 4 }$
B) $\theta = - \frac { \pi } { 4 }$
C) $r \cos \theta = - 2$
D) $r \sin \theta = - 2$
E) $\theta = \pi$