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': 'The name of the first documented child who was reported to be abused (in year 1874): \nSelect and explain. \nA. Mary Ellen, B. Henry, C. Cook, D. Toweson', 'role': 'user'}, {'content': 'Answer: A \nExplanation: The first documented and reported case of child abuse occurred in 1874. A child named Mary Ellen was discovered chained to her bedpost. She was beaten regularly and was found to be severely malnourished. A New York City Church group reported the situation to the police.', 'role': 'assistant'}]