Two metal cans are the same in every respect apart from their outside finish: one has a shiny silver exterior, while the other has a dull black exterior. Each contains $300\,\text{g}$ of water at $80\,^{\circ}\text{C}$, and the water is sealed inside. Both cans are placed in a vacuum, in the darkness of outer space. What happens to the temperature of the water in each can?
- ANeither one will cool down.
- BThe water in the black can cools more slowly than that in the shiny can.
- CThe water in the shiny can cools more slowly than that in the black can.
- DThey both cool down at the same rate.