This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Nutrition, Subject name: Medicine
[{'content': 'Pyridoxine hypervitaminosis causes - \nSelect and explain. \nA. Polyneuropathy, B. Hypercalcemia, C. Liver damage, D. Renal failure', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Causes sensory polyneuropathy when pyridoxine is taken for several months Ref Harrison 20th edition pg 78', 'role': 'assistant'}]