Find a Polar Equation for the Circle $$x ^ { 2 } - 16 x + y ^ { 2 } = 0$$

Multiple Choice

Find a polar equation for the circle.
- $$x ^ { 2 } - 16 x + y ^ { 2 } = 0$$

A) $r = 16 \cos \theta$
B) $r = - 16 \sin \theta$
C) $\mathrm { r } = - 8 \cos \theta$
D) $r = 16 \sin \theta$