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
Requirement of iron during pregnancy is : September 2010 
Select and explain. 
A. 700, B. 800, C. 900, D. 1000
C: 900
Answer: C: 900 
Explanation: Ans. C: 900 Requirement: Fetus and placenta- 300 mg Red cell expansion- 500 mg Loss through sweat, urine and faeces- 200 mg Blood loss at delivery- 200 mg Total requirement- 1200 mg But iron saved due to amenorrhoea is 300 mg so net requirement becomes 900 mg