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
Burning feet syndrome is due to deficiency of ? 
Select and explain. 
A. Niacin, B. Folic acid, C. Vitamin B12, D. Pantothenic acid
D: Pantothenic acid
Answer: D: Pantothenic acid 
Explanation: Ans. is 'd' i.e., Pantothenic acid