This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Oral cavity, Subject name: Surgery
All of the following are precancerous lesions for carcinoma oral cavity except:- 
Select and explain. 
A. Erythroplakia, B. Speckled erythroplakia, C. Discoid lupus erythematosus, D. Chronic hyperplastic candidiasis
C: Discoid lupus erythematosus
Answer: C: Discoid lupus erythematosus 
Explanation: Conditions Associated with Malignant Transformation High - risk Lesions Medium - risk Lesions Low risk or Equivocal - risk Lesions Erythroplakia Speckled Erythroplakia Chronic hyperplastic candidiasis Oral submucous fibrosis Syphilitic glossitis Sideropenic dysphagia (Paterson - Kelly syndrome) Oral lichen planus Discoid lupus erythematosus Discoid keratosis congenital