4. Jessica has a toy wind-up car. Inside the toy car is a coiled spring. Jessica holds the car on a wooden floor, winds the spring up, and then lets the car go. She notices that the car speeds up for a while, and then a little later it rolls onto a carpet and immediately slows down to a stop. What can you conclude about energy during the time that Jessica is winding the spring and during the time that the car is slowing to a stop on the carpet?

A. When Jessica winds the spring, energy is not being created, but instead is just being transferred from her to the car, but when the car is slowing down to a stop, energy is being lost to friction.

B. When Jessica winds the spring, energy is being created, but when the car is slowing down to a stop, energy is not being lost to friction, but instead is just being transferred from the car to the carpet and other things.

C. When Jessica winds the spring, energy is not being created, but instead is just being transferred from her to the car, and when the car is slowing down to a stop, energy is not being lost to friction, but instead is just being transferred from the car to the carpet and other things.

D. When Jessica winds the spring energy is being created, and when the car is slowing down to a stop, energy is being lost to friction.