Find a Polar Equation for the Parabola with Its Focus $x = - 8$

Multiple Choice

Find a polar equation for the parabola with its focus at the pole, eccentricity e = 1, and directrix $x = - 8$ .

A) $r = - \frac { 8 } { 1 - \cos \theta }$
B) $r = \frac { 8 } { 1 - \cos \theta }$
C) $r = \frac { 8 } { 1 + \cos \theta }$
D) $r = - \frac { 8 } { 1 - \sin \theta }$
E) $r = \frac { 8 } { 1 + \sin \theta }$