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': 'In urinary system disease, GI symptoms appears because of- \nSelect and explain. \nA. Chemical reaction, B. Renogastric reflex, C. Peritoneal reaction, D. Reflux phenomenon', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]