Students in a biology class conduct an experiment to determine the effect of temperature on the rate of photosynthesis in a plant. They place an Elodea plant into a test tube filled with water. Then the students place the test tube under a light and slowly increase the temperature of the water. They record their results and display them on a graph as shown.



Which statement is supported by the graph?

A. The production of water molecules is greatest in Section L
B. The number of carbon dioxide molecules in the beaker is greatest in section N
C. The rate of oxygen production is greatest in Section M
D. The rate of oxygen production is lowest in Section M