This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Immune system, Subject name: Medicine
[{'content': 'Sarcoidosis most common presentation - \nSelect and explain. \nA. Erythema nodosum, B. Respiratory manifestation, C. Constitutional symptoms, D. Abnormal X-ray chest', 'role': 'user'}, {'content': "Answer: D \nExplanation: Sarcoidosis is considered with other DPLDs, as over 90% of cases affect the lungs, but the condition can involve almost any organ . Lofgren's syndrome - an acute illness characterised by erythema nodosum, peripheral ahropathy, uveitis, bilateral hilar lymphadenopathy (BHL), lethargy and occasionally fever - is often seen in young women. Alternatively, BHL may be detected in an otherwise asymptomatic individual undergoing a chest X-ray for other purposes. Pulmonary disease may also present in a more insidious manner with cough, exeional breathlessness and radiographic infiltrates; chest auscultation is often surprisingly unremarkable . Ref - Davidsons 23e p630", 'role': 'assistant'}]