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': 'Incidental finding in CT scan, a 3cm adrenal mass, which of the following is not done \nSelect and explain. \nA. Adrenalectomy, B. Dexamethasone suppression test, C. Measurement of catecholamines, D. Midnight plasma coisol', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Adrenalectomy", 'role': 'assistant'}]