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': 'Neurotoxicity is seen with excess of ? \nSelect and explain. \nA. Vitamin B6, B. Vitamin B12, C. Vitamin B2, D. Vitamin C', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Vitamin B6", 'role': 'assistant'}]