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': 'Vector born diseases are – a)  Epidemic typhusb) Japanese encephalitisc)  Tetanusd)  Hangra virus diseasee)  KFD \nSelect and explain. \nA. abc, B. abe, C. cde, D. acd', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]