You mix Kool-aid at home and put it into ice trays. After about 4 hours the Kool-aid has turned into ice cubes. What best describes what happened to the Kool-aid?
A. The liquid has absorbed the cold from the freezer and frozen into ice
B. The liquid has lost heat to the freezer and frozen into ice
C. The liquid has transferred heat back and forth until it froze into ice