Before Sam left for work, he noticed that his car was covered with snow and so went out and started the engine to let it warm up before he left. After eating breakfast, Sam went back to his car to leave for work and noticed that there was no longer any snow on the hood of the car, but the rest of the car still had snow on it. Which of the following correctly explains what Sam witnessed?
A.
The cold from the snow went to the air, which melted the snow.
B.
The cold from the snow was transferred to the car, which melted the snow.
C.
Heat from the engine under the hood transfered to the snow, melting it.
D.
Heat from the air above the car was transferred to the snow on the hood only.