This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Occupational Health, Subject name: Social & Preventive Medicine
[{'content': 'Lead poisoning mostly occurs due to :- \nSelect and explain. \nA. Ingestion, B. Inhalation, C. Direct skin contact, D. None of the above', 'role': 'user'}, {'content': "Answer: B \nExplanation: Lead poisoning (Plumbism, Saturnism or Painter's Colic): Greatest source of lead in Lead Poisoning (Plumbism, Saturnism or Painter's Colic) is; Gasoline / petrol / vehicular exhaust / automobile exhaust. Mode of absorption: Lead can be absorbed by inhalation (MC mode), ingestion or through skin. Clinical feature- baonian line- blue line on gums palllor- first sign,most consistent sign wrist/foot drop colic and encephalopathy screening test- CPU-Copro porphyrin in urine diagnostic test- ALAU-Amino levulinic acid in urine Lead levels in blood Lad levels in urine", 'role': 'assistant'}]