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: Surgery
[{'content': 'Functional GI disorders can be differentiated from organic GI disorders by- \nSelect and explain. \nA. Abdominal pain, B. Diarrhoea, C. Tenesmus, D. Bleeding PR', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]