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': 'Not used in health care planning \nSelect and explain. \nA. To match with limited resources, B. Increasing demands for resources, C. To plan best course of action, D. To decrease wastage', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]