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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. (x -3)2 + yz =9; circle, radius 3, x2 + (y+3)2=9; circle, radius 3, (x+3)2 + y =9; circle, radius.3, x2 + (y-3)2 =9; circle, radius 3, center at (3,0) in rectangular coordinates center at (0, - 3) in rectangular center at ( - 3,0) in rectangular center at (0,3) in rectangular coordinates coordinates coordinates