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': 'Mobile eye care services are not done at which level \nSelect and explain. \nA. Primary care level, B. Tertiary care, C. Secondary care, D. District hospitals', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]