This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Imaging of Interstitial Lung Disease, Subject name: Radiology
[{'content': 'A 35-year-old lady with fever, skin rash and dyspnea. CXR shows? \nSelect and explain. \nA. Shrinking lung syndrome, B. Sarcoidosis, C. Rheumatoid lung, D. Desquamative interstitial pneumonitis', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. (b) Sarcoidosis.', 'role': 'assistant'}]