If two vehicles meet on a narrow mountain road in which there is only room for one vehicle to travel at a time, which one should yield?
A. The vehicle going downhill must yield to the vehicle traveling uphill.
B. The vehicle traveling uphill must yield to the vehicle going downhill.
C. The larger or heavier vehicle must yield to the smaller or lighter vehicle.
D. The vehicle that reaches the narrow point first has the right of way.
