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 Millennium Development Goal is to be reached by: \nSelect and explain. \nA. 2000, B. 2015, C. 2017, D. 2020', 'role': 'user'}, {'content': "Answer: B \nExplanation: The road map of The Millennium Development Goal with established goals and targets is to be reached by year 2015. 189 member countries have set a date of 2015. Ref: Park's textbook of Preventive and Social Medicine, 21stedition, page-11.", 'role': 'assistant'}]