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': 'All of the following are inhibitors of cytochrome oxidase, except: COMEDK 07 \nSelect and explain. \nA. Carbon monoxide, B. Amytal, C. Cyanide, D. Azide', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. Amytal', 'role': 'assistant'}]