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: Pediatrics
[{'content': 'A 6-year-old boy is admitted to the ward with drowsiness, dull deep tendon reflexes and seizures. On examination the child has a line on gums and there is a history of constipation. Which will be most appropriate drug that should be used for this child? \nSelect and explain. \nA. EDTA, B. DMSA, C. BAL, D. Pencillamine', 'role': 'user'}, {'content': "Answer: A \nExplanation: A child with drowsiness, decreased deep tendon reflexes, seizures and grey line on gums suggests a diagnosis of Lead Poisoning, which can be treated with chelating agents like EDTA. Ref: Harrison's Principles of Internal Medicine - 16th Edition, Page 2404; Ghai Essential Pediatrics - 6th Edition, Page 133; KD Tripathy Pharmacology 5th Edition, Page 812-815; Nelson 17th Edition, Page 2360,2361.", 'role': 'assistant'}]