Which Is an Example of Both a Physical and a Chemical

Which is an example of both a physical and a chemical change? Hint: Think about where the wax could have gone and how.

A) The milk in the carton became frozen because the carton was accidentally placed in the freezing compartment overnight.
B) The bit of scrap metal was removed to the junkyard after being crushed by the heavy machine.
C) The gas was collected in a flask and cooled until it eventually became a liquid.
D) The old parchment became dry when it was placed in the warm oven for ten minutes.
E) As a candle burns the wax melts down the side. When the candle is done burning, much of the wax is gone.