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': 'Breast lump is best diagnosed by: March 2013 (b) \nSelect and explain. \nA. FNAC, B. Bilateral Mammography, C. USG, D. CECT breast', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. A i.e. FNAC', 'role': 'assistant'}]