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': 'Ingested lead is mainly eliminated through: \nSelect and explain. \nA. Stool, B. Urine, C. Sweat, D. Almost 100% lymphatics in gut', 'role': 'user'}, {'content': 'Answer: A \nExplanation: The elimination of the ingested lead is mainly through the feces, reflecting the poor gastrointestinal absorption rate. Ref :', 'role': 'assistant'}]