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
[{'content': 'Drug which increases absorption of oral iron ? \nSelect and explain. \nA. Folic acid, B. Nalidixic acid, C. Vitamin C, D. Tetracycline', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., Vitamin C o Factors facilitating iron absorption - Acid, ascorbic acid (Vit C), amino acids containing SH radical, meat.", 'role': 'assistant'}]