Engineers are constructing safety features called crash attenuators on highways to help minimize the impact of car collisions based on Newton's second law and impulse. The equation for impulse is shown below. The diagram below shows a model of a crash attenuator. Image courtesy of NTSB The arrow points in the direction of a possible moving vehicle. Which statement best explains how the engineers want to design the crash attenuator for safety? A. They want to decrease Δt so that the impact force will decrease. B. They want to increase Δt so that the impact force will decrease. C. They want to decrease Δt so that Δv will decrease. D. They want to increase Δt so that Δv will decrease.