Prompt #2: A student set up an experiment where pieces of Elodea plant were placed in different test tubes and sodium bicarbonate solution was added. One of the tubes was wrapped in aluminum foil before both tubes were placed in front of a bright white light. Volumeters were placed on top and the volume was read every 10 minutes for 30 minutes. The results can be seen in the table below. Which of the tubes was exposed to light and how can you tell from the data provided below? Which of the tubes was wrapped in aluminum foil and how can you tell from the data provided below? Describe what is contributing to the change in volume for each tube.

Time (minutes)	Volumeter A readings	Volumeter B readings
0	25	24
10	25	50
20	19	74
30	13	99

answer in a few sentences.