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': 'Which one given below is a DNA virus ? \nSelect and explain. \nA. Polio virus, B. Adenovirus, C. Parvovinis, D. Hepatitis A virus', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., Adenovirus", 'role': 'assistant'}]