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 is not pyridoxine dependant: \nSelect and explain. \nA. Homocystinuria, B. Maple syrup urine disease, C. Oxaluria, D. Xanthinuria', 'role': 'user'}, {'content': 'Answer: B \nExplanation: B i.e. Maple syrup urine disease', 'role': 'assistant'}]