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': 'Which of the following is an example of monarchy? \nSelect and explain. \nA. UK, B. India, C. Thailand, D. Poland', 'role': 'user'}, {'content': 'Answer: A \nExplanation: In a monarchy, the head of the state is a monarch. Examples include UK. Ref: Park 21st edition page: 632.', 'role': 'assistant'}]