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: Pathology
[{'content': 'The dangerous particle size causing pneumoconiosis varies from - \nSelect and explain. \nA. 100-150µm, B. 50-100µm, C. 10-501µm, D. 1-5µm', 'role': 'user'}, {'content': "Answer: D \nExplanation: Pneumoconiosis\n\nPneumoconiosis is an occupational lung disease caused by the inhalation of dust.\nThe development of pneumoconiosis depends on -\n\n\nThe amount of dust retained in the lungs and airways.\nThe size, shape of the particles → The most dangerous particle ranges from 1 to 5 µm in diameter because they may reach the terminal small airway and air sacs and settle in their linings.\nParticle solubility and physiochemical reactivity.\n\nAdditional effects of other irritants (e.g. concomitant smoking).\n\nImportant pneumoconiosis\n\nCool worker's pneumoconiosis (CWP)\xa0→\xa0Coal Dust\nSilicosis (grinder's disease)\xa0→\xa0Silica dust\nAsbestosis\xa0→ Asbestos Dust\nBerylliosis\xa0→ Beryllium dust\nSiderosis\xa0→ Iron dust\nByssinosis\xa0→\xa0Cotton dust", 'role': 'assistant'}]