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
All are true about erythema multiformis except: 
Select and explain. 
A. Due to herpes simplex, B. Due to sulphonamide, C. Lesion are symmetrical, D. Mucous membrane is involved in all
D: Mucous membrane is involved in all
Answer: D: Mucous membrane is involved in all 
Explanation: D. i.e. Mucous membrane is usually involved