Several cars are designed with active crumple zones in the front that get severely damaged during head-on collisions. The purpose of this design is to: a) reduce the impulse experienced by the driver during the collision.
b) increase the impulse experienced by the driver during the collision.
c) reduce the collision time and thus reduce the force acting on the driver.
d) increase the collision time and thus reduce the force acting on the driver.
e) make the repair as expensive as possible.