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: Pathology
[{'content': '"Papenhemier" bodies are composed of: \nSelect and explain. \nA. Copper, B. Iron, C. Lead, D. Zinc', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Iron', 'role': 'assistant'}]