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: Dental
[{'content': 'Handicapped patients are usually taken care of by \nSelect and explain. \nA. Their families, B. Insurance companies, C. Sponsors of care programs, D. Themselves', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]