This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Immune system, Subject name: Medicine
Butterfly rash involves all areas except 
Select and explain. 
A. Cheeks, B. Nasolabial fold, C. Lower eyelids, D. Bridge of nose
B: Nasolabial fold
Answer: B: Nasolabial fold 
Explanation: Ref image davidsons 23e p1035