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: Radiology
[{'content': 'Millary mottling on X-ray chest is seen in: \nSelect and explain. \nA. Histoplasmosis, B. Sarcoidosis, C. Secondaries from Ca. colon, D. All', 'role': 'user'}, {'content': 'Answer: D \nExplanation: A i.e. Histoplasmosis; B i.e. Sarcoidosis; C i.e. Secondaries from CA colon', 'role': 'assistant'}]