Transform the polar equation to an equation in rectangular coordinates. Then identify and graph the equation. r = 2 cos 0 O A. OB. O c. OD. O O O (x + 1) + y-=1; circle, radius 1, x2 + (y + 1)=1; circle, radius 1, (x - 1) +y =1; circle, radius 1, x2+ (y-1)