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: Social & Preventive Medicine
[{'content': 'Burning feet syndrome is due to deficiency of ? \nSelect and explain. \nA. Niacin, B. Folic acid, C. Vitamin B12, D. Pantothenic acid', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is 'd' i.e., Pantothenic acid", 'role': 'assistant'}]