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: Microbiology
[{'content': 'Reassoment has enabled the development of live vaccines, which is a feature of the following virus? \nSelect and explain. \nA. Hepadna virus, B. Herpes virus, C. Astrovirus, D. Rotavirus', 'role': 'user'}, {'content': 'Answer: D \nExplanation: One unique feature of rotaviruses is the ease with which the 11 RNA segments can undergo reassoment. Reassoment has enabled the development of live vaccines that combine genes from readily cultivated animal rotaviruses with human rotavirus genes that encode serotype-specific capsid proteins. Ref: Ray C.G., Ryan K.J. (2010). Chapter 15. Viruses of Diarrhea. In C.G. Ray, K.J. Ryan (Eds), Sherris Medical Microbiology, 5e.', 'role': 'assistant'}]