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: Dental
The most characteristic finding in lichen planus is – 
Select and explain. 
A. Civatte bodies, B. Basal cell degeneration, C. Thinning of nail plate, D. Violaceous lesions
B: Basal cell degeneration
Answer: B: Basal cell degeneration 
Explanation: "The basic pathology in lichen planus is the damage to the basal cell layer of epidermis leading to hydropic degeneration of basal cells".