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
Cyanides mainly affect the enzyme: 
Select and explain. 
A. G-6-P dehydrogenase deficiency, B. Isomerase, C. Cytochrome oxidase, D. None of the above
C: Cytochrome oxidase
Answer: C: Cytochrome oxidase 
Explanation: Cytochrome oxidase