This question: 1 point(s) possi Transform the polar equation to an equation in rectangular coordinates. Then identify and graph the equation. Next question rcos 0 = -7 . . .. . What is the standard form of the equation in rectangular form? What is the graph of this equation? O A. horizontal line O B. circle with center at ( - 7, 0) O C. vertical line O D. circle with center at (0, -7) Select the graph of r cos 0 = - 7. O A. O B. O C. OD