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
All of the following are true about Darier's disease except: 
Select and explain. 
A. Defect in calcium ATPase because of mutation in ATP2A2 gene, B. Corps ronds and corps grains are seen, C. Subepidermal blister, D. V-shaped nicking of nail is present
C: Subepidermal blister
Answer: C: Subepidermal blister 
Explanation: Both Hailey Hailey disease and Darier's disease are characterized by suprabasal acantholysis / suprabasal blister.