The graph shows the change in concentration of one of the species in the reaction A + B + C→D + E A + B + C → D + E. If the graph indicates the reaction rate, then the concentration of which species is plotted? D'or E A or B A and B A or C An untitled graph with two curves. Horizontal axis is labeled Time and has no scale. Vertical axis is labeled Concentration and has no scale. The graph representing the reactant is an exponentially decreasing curve. It touches the vertical axis at a height of about two thirds the length of the vertical axis. The curve has a horizontal asymptote at a height of about one quarter the length of the vertical axis. The graph representing the product is an logarithmically increasing curve. It begins at the origin and has a horizontal asymptote at a height of about three fifths the length of the vertical axis