This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Nutrition and health, 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. No extra K. Cal', 'role': 'user'}, {'content': "Answer: A \nExplanation: - the energy requirements of women are increased during pregnancy and lactation. - additional 350kcal daily is needed during pregnancy. Reference: Park's textbook of preventive and social medicine, 23rd edition, pg no:633 <\\p>", 'role': 'assistant'}]