The graph represents the distance in miles, y, that Car A travels in x minutes. The function y = 5 6 x represents the distance, y, that Car B travels in x minutes. Both cars are moving at a constant rate of speed. Which BEST compares the rates of the two cars? A) The rate of Car B is 1 6 of a mile per minute less than the rate of Car A. B) The rate of Car A is 1 2 of a mile per minute less than the rate of Car B. C) The rate of Car B is 1 6 of a mile per minute greater than the rate of Car A. D) Car A and Car B are traveling at the same rate per minute.