While braking and slowing down, what force of nature is applied on the vehicle?

1. A No force of nature affects the vehicle while it is braking or slowing down.
2. B The force of inertia, i.e. the force which causes the vehicle to continue moving.
3. C The centrifugal force, i.e. the force applied on the vehicle when it is turning.
4. D The lift force, i.e. the force that pulls the vehicle upwards.