39. The figure on the right summarizes the effects of pH on oxygen binding affinity of hemoglobin (the Bohr effects). Based on the figure, which of the following statement is TRUE? (A) Curve A represents binding in the highest pH (B) Curve B represents binding in the highest pH (C) Curve C represents binding in the highest pH (D) Curve A has the highest affinity (E) Curve A bind the highest amount of oxygen for a given oxygen pressure