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': 'Most common mode of lead poisoning – \nSelect and explain. \nA. Ingestion, B. Den-nally, C. Inhalation, D. Through conjuctiva', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Inhalation - Most cases of industrial lead poisoning is due to inhalation of fumes and dust of lead or its compounds.\nIngestion - Small quantities of lead trapped in the upper respiratory tract may be ingested. Contaminated hands may also lead to ingestion.\nSkin - Only organic lead (e.g., tetraethyl lead) is absorbed dermally.', 'role': 'assistant'}]