This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Hematology, Subject name: Pharmacology
A patient Seeta is diagnosed to be having iron deficiency anemia. The agent that can be used to improve the absorption of iron is: 
Select and explain. 
A. Antacids, B. Tetracyclines, C. Phosphates, D. Ascorbic acid
D: Ascorbic acid
Answer: D: Ascorbic acid 
Explanation: Substances improving the absorption of iron are: Ascorbic Acid HCl Substances reducing the absorption of iron Phosphates Meat Phytates Tetracyclines Antacids