This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Health education & planning, Subject name: Social & Preventive Medicine
[{'content': 'When an outcome is compared with intended objectives ,it is called as \nSelect and explain. \nA. Monitoring, B. Evaluation, C. Input output analysis, D. Network analysis', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ref: p.933 25th edition Park's Textbook of Preventive and Social Medicine", 'role': 'assistant'}]