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 true about erythema infectiosum – a) Slapped check appearance seenb) Caused by parvovirusc) Defervescene before rashd) Rash appears on head & neck 
Select and explain. 
A. ac, B. a, C. ab, D. bc
C: ab
Answer: C: ab 
Explanation: None