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 headquaers of WHO is located in: \nSelect and explain. \nA. New York, B. Geneva, C. Rome, D. Ottawa', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Headquaers of WHO is located in Geneva. Ref: Park 21st edition page: 853.', 'role': 'assistant'}]