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': 'Best diagnostic modality for parotid swelling is ? \nSelect and explain. \nA. Enucleation, B. FNAC, C. Superficial parotidectomy, D. Excisional biopsy', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., FNAC", 'role': 'assistant'}]