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': 'The duodenum secretes a hormone which has following effects except : \nSelect and explain. \nA. Causes copious pancreatic juice rich in bicarbonate and poor in enzymes, B. Increases gastric motility, C. Causes gall bladder to contract and sphincter of oddi to relax, D. Leads to meagre flow of pancreatic juice rich in enzymes', 'role': 'user'}, {'content': 'Answer: B \nExplanation: B i.e. Increases gastric motility', 'role': 'assistant'}]