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: Social & Preventive Medicine
Commonest occupational disease in developing countries is - 
Select and explain. 
A. Pneumoconiosis, B. Asbemstosis, C. Lung cancer, D. Occupational poisoning
D: Occupational poisoning
Answer: D: Occupational poisoning 
Explanation: Ans is `d' i.e., Occupational poisoning