This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Toxicology - 2, Subject name: Forensic Medicine
[{'content': 'A small girl with neuropsychiatry symptoms has a habit of licking paint in walls .Symptoms due to inhibition of \nSelect and explain. \nA. ALA dehydratase, B. ALA synthase, C. Heme oxygenase, D. CPG oxidase', 'role': 'user'}, {'content': 'Answer: A \nExplanation: It is a case of lead poisoning. Specifically, lead decreases heme biosynthesis by inhibiting aminolevulinic acid dehydratase (ALAD) and ferrochelatase. patients presents with microcystic hypochromic anemia.', 'role': 'assistant'}]