The Points of Intersections Of $r = 2 - 2 \cos \theta$

Multiple Choice

The points of intersections of $r = 2 - 2 \cos \theta$ and $r = 2 \cos \theta$ are

A) $\left( 1 , - \frac { \pi } { 3 } \right) , \left( 1 , \frac { \pi } { 3 } \right)$
B) $\left( 1 , - \frac { \pi } { 3 } \right) , \left( 1 , \frac { \pi } { 3 } \right) , ( 0,0 )$
C) $\left( 1 , \frac { \pi } { 3 } \right)$
D) $\left( 1 , - \frac { \pi } { 3 } \right)$
E) $\left( 1 , \frac { \pi } { 3 } \right) , ( 0,0 )$