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
Which of the following is not a clinical feature of SLE 
Select and explain. 
A. Malar rash, B. Painful oral ulcers, C. Alopecia, D. Pleuritis
B: Painful oral ulcers
Answer: B: Painful oral ulcers 
Explanation: SLE shows painless oral ulcers.