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': 'All are true about rabies except \nSelect and explain. \nA. Vaccine virus has fixed incubation period, B. It is a DNA virus, C. Incubation period depends upon site of bite, D. All bites on fingers with laceration are class III injuries', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]