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Transform the polar equation to an equation in rectangular coordinates. Then identify and graph the equation. r = 6 cos 0 O A. O B. O C. OD. 8- 8- -8 (x- 3)2 + y2 = 9; circle, radius 3, x2 + (y+3)2 =9; circle, radius 3, x2 + (y-3)2 = 9; circle, radius 3, (x +3)2 + yz =9; circle, radius 3, center at (3,0) in rectangular center at (0, - 3) in rectangular center at (0,3) in rectangular center at ( - 3,0) in rectangular coordinates coordinates coordinates coordinates