This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Haematology, Subject name: Pathology
[{'content': 'Pappenheimer bodies are composed of? \nSelect and explain. \nA. Copper, B. Zinc, C. Iron, D. Lead', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Pappenheimer bodies are seen in siderocytes.Siderocytes are red cells containing granules of non haem iron. Reference: textbook of Pathology ,7th edition ,author Harsha Mohan,page number 277', 'role': 'assistant'}]