27. What is the fundamental relationship between phosphorylation and ATP (adenosine triphosphate)? (A) Phosphorylation is the process of hydrolyzing ATP to release energy. (B) Phosphorylation is the process of adding a phosphate group to a molecule, often using ATP as the phosphate donor. (C) Phosphorylation is the process of synthesizing ATP from ADP and inorganic phosphate using energy released from other reactions. (D) Both B and C. (E) Phosphorylation is the process of removing a phosphate group from a molecule, releasing energy in the form of ATP.