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': 'A relatively component of the electron transporting respiratory chain is \nSelect and explain. \nA. Flavoprotein, B. Cytochrome C1, C. Ubiquinone, D. Cytochrome A', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]