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': 'Egg yields about .... kcal of energy: September 2012 \nSelect and explain. \nA. 70 kcal, B. 80 kcal, C. 90 kcal, D. 100 kcal', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans: A i.e. 70 kcal', 'role': 'assistant'}]