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: Pathology
All are non scrapable white lesions, except: 
Select and explain. 
A. Leukoplakia, B. Lichen planus, C. Chemical burns, D. White sponge nevus
C: Chemical burns
Answer: C: Chemical burns 
Explanation: Non-Scrapable White Lesions

Leukoplakia  
Lichen planus 
Linea alba
Frictional hyperkeratosis  
White sponge nevus  
Dyskeratosis congenita
Chronic hyperplastic candidiasis.