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': 'Cyanides mainly affect the enzyme: \nSelect and explain. \nA. G-6-P dehydrogenase deficiency, B. Isomerase, C. Cytochrome oxidase, D. None of the above', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Cytochrome oxidase', 'role': 'assistant'}]