This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Nutrition & Digestion, Subject name: Biochemistry
Vitamin for which RDA is based on protein intake is: 
Select and explain. 
A. Niacin, B. Riboflavin, C. Pyridoxine, D. Thiamine
C: Pyridoxine
Answer: C: Pyridoxine 
Explanation: Ans. C. Pyridoxine(Ref: Harper 31/e page 533-540)The RDA of Pyridoxine is dependent on Protein intake.The RDA of Thiamine is dependent of Carbohydrate intake.