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: Social & Preventive Medicine
Government of Pak has accepted iron fortification to reduce prevalence of anemia; it has recently been decided to fortify 
Select and explain. 
A. Salt, B. Skimmed dried milk, C. Sugar, D. Flour
D: Flour
Answer: D: Flour 
Explanation: None