This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Nutrition and health, Subject name: Social & Preventive Medicine
Recommended Dietary allowance in pregnancy are - 
Select and explain. 
A. +100-300 cal, B. 35 mg Iron, C. 4 mg folic acid, D. 2500 mg Mg
B: 35 mg Iron
Answer: B: 35 mg Iron 
Explanation: Requirements in pregnancy Pregnancy Proteins +23 g/day Calcium 1200 mg/day Iron 35 mg/day Vitamin A 800mcg/day Ref: Park 25th edition Pgno : 674