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': 'Additional daily energy required during pregnancy and lactatoin \nSelect and explain. \nA. 350 kcals, 350 kcals, B. 350 kcals, 600 kcals, C. 450 kcals, 600 kcals, D. 450 kcals, 350 kcals', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]