This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Peptic Ulcer Disease, Subject name: Medicine
Dumping syndrome is due to all except: 
Select and explain. 
A. Motilin, B. Small stomach, C. Hypeonic fluid contents in bowel, D. Neurotensin
B: Small stomach
Answer: B: Small stomach 
Explanation: Dumping syndrome Signs and symptoms arise from the rapid emptying of hyperosmolar gastric contents into the small intestine, resulting in a fluid shift into the gut lumen with plasma volume contraction and acute intestinal distention. Release of vasoactive GI hormones -vasoactive intestinal polypeptide, neurotensin, motilin play a role in early dumping. Early dumping takes place 15-30 minutes after meals and consists of crampy abdominal discomfo, nausea, diarrhea, belching, tachycardia, palpitations, diaphoresis, lightheadedness, and, rarely, syncope.