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 energy, needed per day during pregnancy? \nSelect and explain. \nA. 150 Kcal, B. 200 Kcal, C. 300 Kcal, D. 350 Kcal', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is 'd' i.e., 350 Kcal", 'role': 'assistant'}]