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 in lactating mothers in first six months – \nSelect and explain. \nA. 300, B. 500, C. 600, D. 1000', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Extra energy requirement during lactation → +600 (during 1st \xa06 months) and +520 (during 6-12 months).', 'role': 'assistant'}]