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': 'Bilateral pleural plaques and pulmonary fibrosis involving bases is hallmark of – \nSelect and explain. \nA. Asbestosis, B. Silicosis, C. Scleroderma, D. Byssinosis', 'role': 'user'}, {'content': 'Answer: A \nExplanation: The most useful radiological finding of asbestosis is the presence of bilateral pleural plaques especially in lower and middle lung zones.', 'role': 'assistant'}]