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': 'Which among the following is the most common mode of lead poisoning? \nSelect and explain. \nA. Ingestion, B. Dermally, C. Inhalation, D. None of the above', 'role': 'user'}, {'content': "Answer: C \nExplanation: Lead poisoning (Plumbism) may occur in 3 ways: Inhalation - Most cases of industrial lead poisoning is due to inhalation of fumes and dust of lead or its compounds. Ingestion - Small quantities of lead trapped in the upper respiratory tract may be ingested. Contaminated hands may also lead to ingestion. Skin - Only organic lead (e.g., tetraethyl lead) is absorbed dermally. Ref: Park's Textbook of Preventive and Social Medicine, 19th edition, Page 662.", 'role': 'assistant'}]