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': 'All of the following are features of secretory diarrhea, except: \nSelect and explain. \nA. It is painless, B. Reduces with fasting, C. Stool volume is > 1L /day, D. Stool osmotic gap is normal', 'role': 'user'}, {'content': "Answer: B \nExplanation: Secretory diarrhea occur due to derangement's in fluid and electrolyte transpo across the enterocolonic mucosa. Features of secretory diarrhea includes: ? Painless ? Persist with fasting ? Watery and large volume ? Normal fecal osmotic gap Ref: Gastrointestinal Physiology Kim E. Barrett, Chapter 5; Harrison's Internal Medicine, 18th Edition, Chapter 40", 'role': 'assistant'}]