This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Inorganic Irritants, Subject name: Forensic Medicine
[{'content': "Mee's line on nail is diagnostic of - \nSelect and explain. \nA. Lead poisoning, B. Arsenic poisoning, C. White phosphorus poisoning, D. Mercury poisoning", 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., Arsenic poisoning Chronic arsenic poisoningo First stage of gastrointestinal & nutritional disturbance:Gradual emaciation is earliest signAnorexia, nausea, vomiting, diarrhoea & abdominal crampso Second catarrhal stageFeatures of common cold, bronchial catarrhal, coughing & hoarsenesso Third stage of skin rashSkin irritation, vesicular eruption resembling nettle rashPatchy brown raindrop type pigmentationHyperkeratosis of palms & solesFalling of hair & brittleness of nailWhite transverse band or Meefs line on nailo Fourth stage of nervous disturbanceSensory motor neuropathy causing tingling, numbness & paresisEncephalopathyo Bone marrow suppression, anemia, weight loss, hepatomegaly, cirrhosis, nephritis, thrombocytopenia, leukemia, skin, lung, liver, bladder & kidney cancer and exfoliative dermatitis & diabetes.", 'role': 'assistant'}]