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': 'Prominent stimulus for release of secretin is : \nSelect and explain. \nA. Acidity of chyme, B. Distention of duodenum, C. Composition of food, D. None', 'role': 'user'}, {'content': 'Answer: A \nExplanation: A i.e. Acidity of chime', 'role': 'assistant'}]