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: Medicine
True about Roseola infantum - 
Select and explain. 
A. Caused by HHV 6 & 7, B. Rash appears in trunk, C. Defeverse. rash begins, D. All the above
B: Rash appears in trunk
Answer: B: Rash appears in trunk 
Explanation: None