On a road, you take a random sample of the speed of 40 cars with a speed detector and determine that their average speed is 49 mph. Which statement is true? A) You conclude that the speed of all cars on this road is exactly 49 mph. B) You conclude that the average speed of all cars on this road is close to 49 mph. C) You conclude that the speed of more than half of the cars on this road is less than 49 mph. D) You conclude that the speed of less than half of the cars on this road is more than 49 mph.On a road, you take a random sample of the speed of 40 cars with a speed detector and determine that their average speed is 49 mph. Which statement is true? A) You conclude that the speed of all cars on this road is exactly 49 mph. B) You conclude that the average speed of all cars on this road is close to 49 mph. C) You conclude that the speed of more than half of the cars on this road is less than 49 mph. D) You conclude that the speed of less than half of the cars on this road is more than 49 mph.