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': 'Vaccine preparation requires which virus as vector- \nSelect and explain. \nA. Rhinovirus, B. Vaccinia, C. Adenovirus, D. Ebola', 'role': 'user'}, {'content': "Answer: B \nExplanation: The vaccinia virus is being used as a vector for the develioment of recombinant vaccines REF:ANANTHANARAYAN AND PANIKER'S TEXTBOOK OF MICROBIOLOGY 9TH EDITION PAGE NO:462", 'role': 'assistant'}]