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': 'Highest level of health care is \nSelect and explain. \nA. Primary health care, B. Tertiary care, C. Child care, D. Secondary level care', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]