316.According to international OECD research, when a vehicle collides with a pedestrian, motorcycle, orbicycle, and the impact speed increases from 30 km/h to 50 km/h, how does the fatality probability of thestruck road user change? (A) It increases from approximately 10% to approximately 30%; the effect ofspeed increase is linear. (B) It increases sharply from approximately 10% to approximately 80%; theeffect of speed increase is nonlinear and steep. (C) It increases from approximately 20% to approximately50%; the effect of speed increase is relatively moderate.