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': 'Slapped cheek sign is seen in - \nSelect and explain. \nA. Parvovirus B19, B. JC virus, C. Rota virus, D. Mumps', 'role': 'user'}, {'content': 'Answer: A \nExplanation: parvo virus B19 causes erythema infectiosum it sta with erythema of cheeks called slapped cheek appearance REF:ANATHANARAYANAN MICROBIOLOGY NINTH EDITION PAGE.554', 'role': 'assistant'}]