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': 'Which of the following is used for medical adrenalectomy?- \nSelect and explain. \nA. Mitotane, B. Methotrexate, C. Doxorubicin, D. 5-Fluorouracil', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]