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
All of the following are required more during lactation as compared to pregnancy, except ? 
Select and explain. 
A. Iron, B. Vitamin A, C. Niacin, D. Energy
A: Iron
Answer: A: Iron 
Explanation: Ans. is 'a' i.e., Iron Required more during lactation as compared to pregnancy : Energy, Vitamin A, thiamin, riboflavin, Vitamin C, niacin, and Vitamin B12. Required more during pregnancy : Iron, protein, and folate. Same requirment in pregnancy and lactation : Fat, calcium, zinc, magnesium, and vitamin B6.