This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Chronic Interstitial (Restrictive, Infiltrative) Lung Diseases, Subject name: Pathology
[{'content': 'Cut surface of lungs in Silicosis shows? \nSelect and explain. \nA. Pleural thickening, B. Hard collagenous scars, C. Nodules, D. All of the above', 'role': 'user'}, {'content': "Answer: D \nExplanation: ANSWER: (D) All of the aboveREF: Robbin's 7th ed p. 734Cut surface of lung in silicosis shows:Tiny barely palpable nodules in early stageHard collagenous scars later onPleural thickening", 'role': 'assistant'}]