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
Which of the following is the most common congenital viral infection ? 
Select and explain. 
A. Rubella, B. Cytomegalovirus, C. Herpes simplex, D. REV
B: Cytomegalovirus
Answer: B: Cytomegalovirus 
Explanation: None