This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Infectious disease, Subject name: Pediatrics
[{'content': 'Which of the following is the most common congenital viral infection? \nSelect and explain. \nA. Rubella, B. Cytomegalovirus, C. Herpes simplex, D. HIV', 'role': 'user'}, {'content': 'Answer: B \nExplanation: *Human CMV is widely distributed. *CMV is the most common cause of congenital infection,which occasionally causes the syndrome of cytomegalic inclusion disease in neonates. Reference: Nelson textbook of pediatrics 21st edition Page 1115', 'role': 'assistant'}]