This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Hospital waste and disaster management, Occupational health, Subject name: Social & Preventive Medicine
[{'content': "True combination is all except - \nSelect and explain. \nA. Cold-Trench foot, B. Light-Miner's nystagmus, C. Pressure-Caissons disease, D. Cane fibre-Farmers lung", 'role': 'user'}, {'content': 'Answer: D \nExplanation: Farmers lung is due to inhalation of mouldy hay or grain dust. (REF. PARK&;S TEXTBOOK OF PREVENTIVE AND SOCIAL MEDICAL 21ST EDITION. PAGE NO - 748)', 'role': 'assistant'}]