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
Roseola infantum can be caused by – 
Select and explain. 
A. Herpes virus 6, B. Parvovirus B 19, C. Echovirus 19, D. All of the above
D: All of the above
Answer: D: All of the above 
Explanation: None