Becky is preparing tea. When the water for the tea boils, she pours it in a cup of cold milk. Assuming that the system is closed and that thermal energy distribution is uniform when the hot water mixes with the cold milk, which of the following is true about the thermal energy of each of the liquids in the cup?
A. The thermal energy lost by the hot liquid will be equal to the thermal energy gained by the cold liquid.
B. The thermal energy lost by the hot liquid will be more than the thermal energy gained by the cold liquid.
C. The thermal energy lost by the hot liquid will be less than the thermal energy gained by the cold liquid.
D. A transfer of thermal energy will not occur between the liquids because the system is closed.
