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: Skin
[{'content': 'All are true about erythema multiformis except: \nSelect and explain. \nA. Due to herpes simplex, B. Due to sulphonamide, C. Lesion are symmetrical, D. Mucous membrane is involved in all', 'role': 'user'}, {'content': 'Answer: D \nExplanation: D. i.e. Mucous membrane is usually involved', 'role': 'assistant'}]