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': 'All are seen in carcinoid syndrome except \nSelect and explain. \nA. Diarrhoea, B. Constipation, C. Liver metastasis, D. 5-HT secretion', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., Constipation", 'role': 'assistant'}]