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': 'The most likely cause of bihilar lymphadenopathy is - \nSelect and explain. \nA. Histoplasmosis, B. Tuberculosis, C. Sarcoidosis, D. Aspergillosis', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]