1. A dry cell battery is connected to a fan through a switch. When the switch is closed the blades of the fan turn. The fan blows air, but is very silent, so you can ignore any sound that it creates. A student writes the following explanation for how the battery-fan system works in terms of energy.

(1) When the switch is closed, there is an electric circuit interaction between the battery and the fan, and the battery transfers energy to the fan.

(2) During this interaction the chemical potential energy of the battery decreases, and its thermal energy increases so it warms up and thus transfers energy to the surroundings due to the heat interactions.

(3) The fan increases in both kinetic and thermal energy, so it also warms up and transfers energy to the surroundings due to the heat interactions.

(4) Finally, the fan also transfers energy to the surrounding air through a contact push/pull interaction, which makes the air move away from it.

A. The explanation is not accurate because sentence #2 is wrong.

B. The explanation is not accurate because sentence #4 is wrong.

C. The explanation is not accurate because sentence #1 is wrong.

D. The explanation is accurate as written.

E. The explanation is not accurate because sentence #3 is wrong.