This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Non communicable diseases, Subject name: Social & Preventive Medicine
[{'content': 'Which year MTP act was passed - \nSelect and explain. \nA. 1971, B. 1981, C. 1957, D. 1961', 'role': 'user'}, {'content': "Answer: A \nExplanation: park's textbook of preventive and social medicine 23rd edition. *implementing rules and regulations for legalisation of aboion was initially written in 1971 were revised again in 1992 came to be known as the MTP act 1971.", 'role': 'assistant'}]