This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Virology, Subject name: Microbiology
[{'content': 'About rabies true is - \nSelect and explain. \nA. Vaccine causes life long immunity, B. Multiple strains are found, C. CNS infection occurs through viremia, D. Bullet-shaped nonenveloped, double stranded RNA virus', 'role': 'user'}, {'content': 'Answer: A \nExplanation: The introduction of cell culture vaccine which are free from serious complication has made pre exposure immunisation in humans safe and feasble REF:ANANTHANARYANAN TEXT BOOK OF MICROBIOLOGY 9EDITION PGNO.534', 'role': 'assistant'}]