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': 'All are true about Erythema multiforme except \nSelect and explain. \nA. Target lesion, B. Does not involve mucosa, C. Associated with HSV, D. Extensor involvement', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]