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': 'The WHO was set up in- \nSelect and explain. \nA. 1929, B. 1946, C. 1948, D. 1952', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., 1948", 'role': 'assistant'}]