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: Pharmacology
Drug which increases absorption of oral iron ? 
Select and explain. 
A. Folic acid, B. Nalidixic acid, C. Vitamin C, D. Tetracycline
C: Vitamin C
Answer: C: Vitamin C 
Explanation: Ans. is 'c' i.e., Vitamin C o Factors facilitating iron absorption - Acid, ascorbic acid (Vit C), amino acids containing SH radical, meat.