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
[{'content': 'Which of the following is not a clinical feature of SLE \nSelect and explain. \nA. Malar rash, B. Painful oral ulcers, C. Alopecia, D. Pleuritis', 'role': 'user'}, {'content': 'Answer: B \nExplanation: SLE shows painless oral ulcers.', 'role': 'assistant'}]