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': 'Acid secretion in stomach is increased in all of the following conditions, except: \nSelect and explain. \nA. Decreased Histamine, B. Decreased Acetyl choline, C. Food in stomach, D. Decreased Gastrin', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Food in stomach', 'role': 'assistant'}]