This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Social & Preventive Medicine
[{'content': 'Monetary benefit is measured in \nSelect and explain. \nA. Program budgeting system, B. Network analysis, C. Cost effective analysis, D. cost benefit analysis', 'role': 'user'}, {'content': 'Answer: D \nExplanation: ref : park 21st ed', 'role': 'assistant'}]