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
All of the following are features of secretory diarrhea, except: 
Select and explain. 
A. It is painless, B. Reduces with fasting, C. Stool volume is > 1L /day, D. Stool osmotic gap is normal
B: Reduces with fasting
Answer: B: Reduces with fasting 
Explanation: 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