This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Physiology
[{'content': 'All are primary functions of bile acids, EXCEPT: \nSelect and explain. \nA. To promote bile flow, B. To solubilize cholesterol and phospholipid in the gallbladder, C. To enhance dietary lipid digestion and absorption, D. To promote bile secretion', 'role': 'user'}, {'content': 'Answer: D \nExplanation: The primary functions of bile acids are (1) to promote bile flow, (2) to solubilize cholesterol and phospholipid in the gallbladder (3) to enhance dietary lipid digestion and absorption Ref: Harrison, E-18, P-2461', 'role': 'assistant'}]