Kendra watches liquid drops of wax run down the side of a candle. As the liquid wax moves down the candle, it cools off. What is happening as the liquid wax cools off?

A.
The wax particles move closer together and the wax turns into a solid.
B.
The wax particles move further apart and the wax turns into a gas.
C.
The wax particles move further apart and the wax turns into a solid.
D.
The wax particles move closer together and the wax turns into a gas.