A flowing stream contains water that is 18 degrees Celsius. Cans of soft drinks at 28 degrees Celsius are lowered into the stream. Which of the following will most likely occur? 
 a The soft drinks will absorb cold energy from the stream's water.
 b The soft drinks will not change temperature since they are sealed.
 c The cans will cool until they are the same temperature as the stream.
 d The temperature of the cans will decrease to freezing as long as the stream is flowing.