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: Pharmacology
[{'content': 'Octreotide is not used in: \nSelect and explain. \nA. Varices, B. Refractory diarrhoea in AIDS, C. Carcinoid, D. Glucagonoma', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Glucagonoma', 'role': 'assistant'}]