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: Biochemistry
[{'content': 'Mechanism of cyanide poisoning? \nSelect and explain. \nA. Inhibition of cytochrome C, B. Inhibition of complex I, C. Inhibition of carbonic anhydrase, D. Inhibition of cytochrome oxidase.', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Complex IV is also called cytochrome oxidase. Inhibitors are carbon monoxide, cyanide, Hydrogen sulphide, Sodium Azide.', 'role': 'assistant'}]