This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Sarcoidosis, Subject name: Medicine
[{'content': 'True about sarcoidosis? \nSelect and explain. \nA. Causes large cavitatory lesions, B. Spontaneous remission may occur, C. Tuberculin test is negative, D. Caseation and necrosis may occur', 'role': 'user'}, {'content': "Answer: B \nExplanation: Acute sarcoidosis is more common in whites than and usually is associated with spontaneous remission within two years. Spontaneous remission also occurs in patients with Lofgren's syndrome, which consists of b/l lymphadenopathy, ankle ahritis, erythema nodosum, fever, myalgia, and weight loss", 'role': 'assistant'}]