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': 'Mid day meal programme was first launched in: \nSelect and explain. \nA. West Bengal, B. Tamil Nadu, C. Gujrat, D. Delhi', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Mid.day meal programme was introduced in a large scale in 1960s under the chief ministership of K. Kamraj Nadar in Tamil Nadu. Ref: National Health Programmes in India, J.Kishore, 10th edition pg: 453', 'role': 'assistant'}]