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
[{'content': 'Where is the Central Labour Institute located? \nSelect and explain. \nA. Mumbai, B. Kolkata, C. Chennai, D. Kanpur', 'role': 'user'}, {'content': 'Answer: A \nExplanation: The Central Labour Institute was set up in Mumbai in 1970 to study various aspects of occupational health. The regional labour institutes are located in Kanpur, Kolkata and Chennai. Ref: Park 21st edition page: 759.', 'role': 'assistant'}]