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': 'Which Vitamin is involved in Redox reactions \nSelect and explain. \nA. Pyridoxin, B. Biotin, C. Folic acid, D. Riboflavin', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is 'd' i.e., Riboflavin", 'role': 'assistant'}]