The diagram below shows the path of a roller coaster car on a track.
What happens as the roller coaster car travels from Point A to Point B?
A.
The car's kinetic energy decreases and is lost permanently from the system.
B.
The car's kinetic energy is transformed into gravitational potential energy.
C.
The car's gravitational potential energy decreases and is lost permanently from the system.
D.
The car's gravitational potential energy is transformed into kinetic energy.