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': 'The recommended daily energy intake of an adult woman with heavy work is \nSelect and explain. \nA. 2900, B. 1800, C. 2100, D. 2300', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]