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
[{'content': 'Extra calories required during pregnancy state is: March 2010 \nSelect and explain. \nA. 100 kcal/day, B. 200 kcal/day, C. 300 kcal/day, D. 400 kcal/day', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans. C: 300 kcal/day Extra calories requirement: During pregnancy:+300 kcal During first 6 months of lactation:+550 kcal During next 6 months of lactation:+400 kcal', 'role': 'assistant'}]