This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Infectious Disease, Subject name: Pathology
[{'content': 'Most common clinical presentation of sarcoidosis: \nSelect and explain. \nA. Pleural plaque, B. Hilar lymphadenopathy, C. Pulmonary fibrosis, D. Interstitial calcification', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. (b) Hilar lymphadenopathyRef: Robbings pathology 9th ed. 1692-93', 'role': 'assistant'}]