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': 'Smallest DNA virus is - \nSelect and explain. \nA. Herpes virus, B. Adenovirus, C. Parvovirus, D. Poxvirus', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Smallest virus (also smallest DNA virus) → Parvovirus.\nLargest virus (also largest DNA virus) → Poxvirus.\nSmallest RNA virus → Picornavirus\nLargest RNA virus → Paramyxoviridae.', 'role': 'assistant'}]