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: Forensic Medicine
[{'content': 'Lead inhibits which enzymes in the heme synthesis pathway: CMC (Vellore) 07 \nSelect and explain. \nA. Aminolevulinate synthase, B. Ferrochelatase and 6-ALA dehydratase, C. Porphobilinogen deaminase, D. Uroporphyrinogen decarboxylase', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. Ferrochelatase and 6-ALA dehydratase', 'role': 'assistant'}]