This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Respiratory system, Subject name: Anatomy
[{'content': 'Which of the following is characterically not associated with the development of interstial lung disease \nSelect and explain. \nA. Organic dusts, B. Inorganic dusts, C. Toxic gases, D. None', 'role': 'user'}, {'content': "Answer: D \nExplanation: All the mentioned are associated with interstial lung disease Interstitial lung disease may be caused by long-term exposure to hazardous materials, such as asbestos or coal dust, or it can be caused by an auto-immune disease such as rheumatoid ahritis. Once lung scarring occurs, it's generally irreversible.", 'role': 'assistant'}]