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: Pediatrics
[{'content': 'Infantile myocarditis and pericarditis is due to \nSelect and explain. \nA. Coxsackie A, B. Coxsackie B, C. Mumps, D. Pox virus', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., Coxsackie B o The commonest cause of myocarditis is coxsackie B infection, which occurs any where from the age of a few hours to 7 weeks, with a peak around two weeks.", 'role': 'assistant'}]