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': 'A 24 years old primigravida wt = 57 kg, Hb 11,0 gm% visits an antenatal clinic during 2nd trimester of pregnancy seeking advice on dietary intake. She should be advised - \nSelect and explain. \nA. Additional intake of 300 K.cal, B. Additional intake of 500 K.cal, C. Additional intake of 650 K.cal, D. None', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is 'None' o Females have increased energy requirments during vulnerable periods such as lactation & pregnancy.", 'role': 'assistant'}]