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
[{'content': 'Butterfly rash involves all areas except \nSelect and explain. \nA. Cheeks, B. Nasolabial fold, C. Lower eyelids, D. Bridge of nose', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ref image davidsons 23e p1035', 'role': 'assistant'}]