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': 'All of the following drugs are used in the treatment of Multiple myeloma, Except: \nSelect and explain. \nA. Boezomib, B. Melphelan, C. Hydroxyurea, D. Cyclophosphamide', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Answer is C (Hydroxyurea) Hydroxyurea is not used in the management of Multiple Myeloma.', 'role': 'assistant'}]