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: Unknown
Which of the following facilitates entry of iron 
Select and explain. 
A. Hepcidin, B. DMT-2, C. DMT-1, D. Ferroportin
C: DMT-1
Answer: C: DMT-1 
Explanation: Ref. API Textbook of Medicine. Pg. 1245