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': 'A 55 year old male presented with history suggestive of FUO. He had mutiple firm discrete cervical lymphadenopathy. Serum angiotensin conveing enzyme was elevated in this patient. It point to the diagnosis of: \nSelect and explain. \nA. Non hodgkins lymphoma, B. Kikuchi disease, C. Sarcoidosis, D. Chronic lymphocytic leukemia', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Elevated level of serum angiotensin conveing enzyme may point to the diagnosis of sarcoidosis in patients with FUO and lymphadenopathy. Ref: Harrison, Edition-18, Page-162.', 'role': 'assistant'}]