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': 'In ETC, oxidative phosphylartion (ATP formation) is regulated by \nSelect and explain. \nA. NADH Co-Q reductase, B. Cytochrome C oxidase, C. Co-Q cytochrome C reductase, D. All of these', 'role': 'user'}, {'content': "Answer: D \nExplanation: NADH Co-Q reductase; 'b' i.e., Cytochrome C oxidase & `e' i.e., Co-Q cytochrome C reductase", 'role': 'assistant'}]