13.According to the diagram, what should the motorcyclist do to travel more safely? A.Since the driver sits higher in the large vehicle, there is a dead angle in front of the vehicle. The motorcyclist shall avoid riding in the front. B.The motorcyclist shall keep a safe distance from and a gap between the large vehicle. C.Brake immediately and wait for the large vehicle to pass before traveling. D.Pass the large vehicle quickly to make a turn ahead of it. (A) A and B. (B) B and C. (C) A and D.