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: Medicine
[{'content': 'False about osmotic diarrhea \nSelect and explain. \nA. Stool volume decreasing with fasting, B. Normal stool osmotic gap, C. Celiac sprue cause osmotic diarrhea, D. All the above', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Osmotic diarrhea - increased stool osmotic gap.', 'role': 'assistant'}]