. Independent travel for a person who is blind involves some risk that can be greatly reduced when you, the driver, are aware of the use and meaning of a white cane or guide dog. B. Drivers must always yield the right-of-way to persons who are blind. C. When a pedestrian is crossing a street or highway guided by a dog or carrying a white cane (or a white cane with a red tip), vehicles must slow down. D. none of the above