Assume Barbara Likes Driving Fast, but Hates Getting Injured

Assume Barbara likes driving fast, but hates getting injured. If Congress passes a law for mandatory airbags, Barbara is likely to experience an increased number of accidents. Why?

A) The benefits of driving faster increase.
B) The expected cost of being in an accident at any given speed decreases.
C) Barbara will defy the law and not have airbags, since she thinks no one is going to enforce it
D) Barbara is confident that she can drive flawless, since others will have airbags