This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: JIPMER 2018, Subject name: Social & Preventive Medicine
[{'content': 'The theme of World AIDS Day 2019 is: \nSelect and explain. \nA. Unite for HIV, B. Communities make the difference, C. Right to health, D. Everyone counts', 'role': 'user'}, {'content': 'Answer: B \nExplanation: The theme of World AIDS day 2019 is "Communities make the difference" World AIDS day- 1st December every year Theme for AIDS day 2017 : Everyone Counts Theme for AIDS day 2018 : Know Your Status', 'role': 'assistant'}]