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': 'Brick-shaped virus - \nSelect and explain. \nA. Chicken pox, B. Small pox, C. CMV, D. EBV', 'role': 'user'}, {'content': 'Answer: B \nExplanation: The virion of small pox is brick shaped REF:ANANTHANARYANAN TEXT BOOK OF MICROBIOLOGY 9EDITION PGNO.463', 'role': 'assistant'}]