Monty fully filled a glass bottle with water, put a stopper on it and placed it upright in the freezer overnight. When he looked at it in the morning, the stopper was out of the bottle and a column of ice had emerged through the opening of the bottle.Which one of the following is the best explanation for what Monty had observed?

• A. The bottle had contracted when it was put in the freezer and the water could no longer fit into it.
• B. Extra water condensed from the air in the freezer and then froze to form the column of ice.
• C. The bottle and stopper had contracted, allowing the water to pour out and form the ice column.
• D. The volume of water had increased when the water froze, forcing the stopper out of the bottle and forming the column of ice.