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
What is true of iron: 
Select and explain. 
A. It is stored in ferritin, B. It is absorbed by Transferrin in the intestine, C. Spleen in major storage organ, D. Fe++ is excreted in urine
A: It is stored in ferritin
Answer: A: It is stored in ferritin 
Explanation: A i.e. It is stored in ferritin