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: Physiology
Following is given with iron to increase its absorption ? 
Select and explain. 
A. Milk, B. Antacids, C. Citrus fruits, D. Alkalies
C: Citrus fruits
Answer: C: Citrus fruits 
Explanation: Ans. is 'c' i.e., Citrus fruits Citrus fruits are good sources of vitamin C (ascorbic acid) which increases intestinal absorption of iron.