If the PH of the Blood Were to Rise and the Blood

If the pH of the blood were to rise and the blood become less acidic, what affect would this have?

A) The red blood cells would secrete carbonic anhydrase.
B) The blood would carry more CO₂.
C) Hemoglobin would release O₂ more readily.
D) Hemoglobin would be more likely to bind O₂.
E) Heme groups would bind more tightly to the globin.